diff --git a/docs/src/contributing_websocket_http_api.md b/docs/src/contributing_websocket_http_api.md
index 00e26b0d3..568bafc32 100644
--- a/docs/src/contributing_websocket_http_api.md
+++ b/docs/src/contributing_websocket_http_api.md
@@ -17,6 +17,7 @@
 - [Errors](#errors)
 - [API documentation](#api-documentation)
   * [Sort Types](#sort-types)
+  * [Undoing actions](#undoing-actions)
   * [Websocket vs HTTP](#websocket-vs-http)
   * [User / Authentication / Admin actions](#user--authentication--admin-actions)
     + [Login](#login)
@@ -43,142 +44,198 @@
       - [Request](#request-5)
       - [Response](#response-5)
       - [HTTP](#http-6)
-    + [Edit User Mention](#edit-user-mention)
+    + [Mark User Mention as read](#mark-user-mention-as-read)
       - [Request](#request-6)
       - [Response](#response-6)
       - [HTTP](#http-7)
-    + [Mark All As Read](#mark-all-as-read)
+    + [Get Private Messages](#get-private-messages)
       - [Request](#request-7)
       - [Response](#response-7)
       - [HTTP](#http-8)
-    + [Delete Account](#delete-account)
+    + [Create Private Message](#create-private-message)
       - [Request](#request-8)
       - [Response](#response-8)
       - [HTTP](#http-9)
-    + [Add admin](#add-admin)
+    + [Edit Private Message](#edit-private-message)
       - [Request](#request-9)
       - [Response](#response-9)
       - [HTTP](#http-10)
-    + [Ban user](#ban-user)
+    + [Delete Private Message](#delete-private-message)
       - [Request](#request-10)
       - [Response](#response-10)
       - [HTTP](#http-11)
-  * [Site](#site)
-    + [List Categories](#list-categories)
+    + [Mark Private Message as Read](#mark-private-message-as-read)
       - [Request](#request-11)
       - [Response](#response-11)
       - [HTTP](#http-12)
-    + [Search](#search)
+    + [Mark All As Read](#mark-all-as-read)
       - [Request](#request-12)
       - [Response](#response-12)
       - [HTTP](#http-13)
-    + [Get Modlog](#get-modlog)
+    + [Delete Account](#delete-account)
       - [Request](#request-13)
       - [Response](#response-13)
       - [HTTP](#http-14)
-    + [Create Site](#create-site)
+    + [Add admin](#add-admin)
       - [Request](#request-14)
       - [Response](#response-14)
       - [HTTP](#http-15)
-    + [Edit Site](#edit-site)
+    + [Ban user](#ban-user)
       - [Request](#request-15)
       - [Response](#response-15)
       - [HTTP](#http-16)
-    + [Get Site](#get-site)
+  * [Site](#site)
+    + [List Categories](#list-categories)
       - [Request](#request-16)
       - [Response](#response-16)
       - [HTTP](#http-17)
-    + [Transfer Site](#transfer-site)
+    + [Search](#search)
       - [Request](#request-17)
       - [Response](#response-17)
       - [HTTP](#http-18)
-    + [Get Site Config](#get-site-config)
+    + [Get Modlog](#get-modlog)
       - [Request](#request-18)
       - [Response](#response-18)
       - [HTTP](#http-19)
-    + [Save Site Config](#save-site-config)
+    + [Create Site](#create-site)
       - [Request](#request-19)
       - [Response](#response-19)
       - [HTTP](#http-20)
-  * [Community](#community)
-    + [Get Community](#get-community)
+    + [Edit Site](#edit-site)
       - [Request](#request-20)
       - [Response](#response-20)
       - [HTTP](#http-21)
-    + [Create Community](#create-community)
+    + [Get Site](#get-site)
       - [Request](#request-21)
       - [Response](#response-21)
       - [HTTP](#http-22)
-    + [List Communities](#list-communities)
+    + [Transfer Site](#transfer-site)
       - [Request](#request-22)
       - [Response](#response-22)
       - [HTTP](#http-23)
-    + [Ban from Community](#ban-from-community)
+    + [Get Site Config](#get-site-config)
       - [Request](#request-23)
       - [Response](#response-23)
       - [HTTP](#http-24)
-    + [Add Mod to Community](#add-mod-to-community)
+    + [Save Site Config](#save-site-config)
       - [Request](#request-24)
       - [Response](#response-24)
       - [HTTP](#http-25)
-    + [Edit Community](#edit-community)
+  * [Community](#community)
+    + [Get Community](#get-community)
       - [Request](#request-25)
       - [Response](#response-25)
       - [HTTP](#http-26)
-    + [Follow Community](#follow-community)
+    + [Create Community](#create-community)
       - [Request](#request-26)
       - [Response](#response-26)
       - [HTTP](#http-27)
-    + [Get Followed Communities](#get-followed-communities)
+    + [List Communities](#list-communities)
       - [Request](#request-27)
       - [Response](#response-27)
       - [HTTP](#http-28)
-    + [Transfer Community](#transfer-community)
+    + [Ban from Community](#ban-from-community)
       - [Request](#request-28)
       - [Response](#response-28)
       - [HTTP](#http-29)
-  * [Post](#post)
-    + [Create Post](#create-post)
+    + [Add Mod to Community](#add-mod-to-community)
       - [Request](#request-29)
       - [Response](#response-29)
       - [HTTP](#http-30)
-    + [Get Post](#get-post)
+    + [Edit Community](#edit-community)
       - [Request](#request-30)
       - [Response](#response-30)
       - [HTTP](#http-31)
-    + [Get Posts](#get-posts)
+    + [Delete Community](#delete-community)
       - [Request](#request-31)
       - [Response](#response-31)
       - [HTTP](#http-32)
-    + [Create Post Like](#create-post-like)
+    + [Remove Community](#remove-community)
       - [Request](#request-32)
       - [Response](#response-32)
       - [HTTP](#http-33)
-    + [Edit Post](#edit-post)
+    + [Follow Community](#follow-community)
       - [Request](#request-33)
       - [Response](#response-33)
       - [HTTP](#http-34)
-    + [Save Post](#save-post)
+    + [Get Followed Communities](#get-followed-communities)
       - [Request](#request-34)
       - [Response](#response-34)
       - [HTTP](#http-35)
-  * [Comment](#comment)
-    + [Create Comment](#create-comment)
+    + [Transfer Community](#transfer-community)
       - [Request](#request-35)
       - [Response](#response-35)
       - [HTTP](#http-36)
-    + [Edit Comment](#edit-comment)
+  * [Post](#post)
+    + [Create Post](#create-post)
       - [Request](#request-36)
       - [Response](#response-36)
       - [HTTP](#http-37)
-    + [Save Comment](#save-comment)
+    + [Get Post](#get-post)
       - [Request](#request-37)
       - [Response](#response-37)
       - [HTTP](#http-38)
-    + [Create Comment Like](#create-comment-like)
+    + [Get Posts](#get-posts)
       - [Request](#request-38)
       - [Response](#response-38)
       - [HTTP](#http-39)
+    + [Create Post Like](#create-post-like)
+      - [Request](#request-39)
+      - [Response](#response-39)
+      - [HTTP](#http-40)
+    + [Edit Post](#edit-post)
+      - [Request](#request-40)
+      - [Response](#response-40)
+      - [HTTP](#http-41)
+    + [Delete Post](#delete-post)
+      - [Request](#request-41)
+      - [Response](#response-41)
+      - [HTTP](#http-42)
+    + [Remove Post](#remove-post)
+      - [Request](#request-42)
+      - [Response](#response-42)
+      - [HTTP](#http-43)
+    + [Lock Post](#lock-post)
+      - [Request](#request-43)
+      - [Response](#response-43)
+      - [HTTP](#http-44)
+    + [Sticky Post](#sticky-post)
+      - [Request](#request-44)
+      - [Response](#response-44)
+      - [HTTP](#http-45)
+    + [Save Post](#save-post)
+      - [Request](#request-45)
+      - [Response](#response-45)
+      - [HTTP](#http-46)
+  * [Comment](#comment)
+    + [Create Comment](#create-comment)
+      - [Request](#request-46)
+      - [Response](#response-46)
+      - [HTTP](#http-47)
+    + [Edit Comment](#edit-comment)
+      - [Request](#request-47)
+      - [Response](#response-47)
+      - [HTTP](#http-48)
+    + [Delete Comment](#delete-comment)
+      - [Request](#request-48)
+      - [Response](#response-48)
+      - [HTTP](#http-49)
+    + [Remove Comment](#remove-comment)
+      - [Request](#request-49)
+      - [Response](#response-49)
+      - [HTTP](#http-50)
+    + [Mark Comment as Read](#mark-comment-as-read)
+      - [Request](#request-50)
+      - [Response](#response-50)
+      - [HTTP](#http-51)
+    + [Save Comment](#save-comment)
+      - [Request](#request-51)
+      - [Response](#response-51)
+      - [HTTP](#http-52)
+    + [Create Comment Like](#create-comment-like)
+      - [Request](#request-52)
+      - [Response](#response-52)
+      - [HTTP](#http-53)
   * [RSS / Atom feeds](#rss--atom-feeds)
     + [All](#all)
     + [Community](#community-1)
@@ -281,6 +338,10 @@ These go wherever there is a `sort` field. The available sort types are:
 - `TopYear` - the most upvoted posts/communities of the current year.
 - `TopAll` - the most upvoted posts/communities on the current instance.
 
+### Undoing actions
+
+Whenever you see a `deleted: bool`, `removed: bool`, `read: bool`, `locked: bool`, etc, you can undo this action by sending `false`.
+
 ### Websocket vs HTTP
 
 - Below are the websocket JSON requests / responses. For HTTP, ignore all fields except those inside `data`.
@@ -465,6 +526,9 @@ Only the first user will be able to be the admin.
 `GET /user/mentions`
 
 #### Mark User Mention as read
+
+Only the recipient can do this.
+
 ##### Request
 ```rust
 {
@@ -595,6 +659,9 @@ Only the first user will be able to be the admin.
 `POST /private_message/delete`
 
 #### Mark Private Message as Read
+
+Only the recipient can do this.
+
 ##### Request
 ```rust
 {
@@ -1661,6 +1728,9 @@ Only a mod or admin can remove the comment.
 `POST /comment/remove`
 
 #### Mark Comment as Read
+
+Only the recipient can do this.
+
 ##### Request
 ```rust
 {
diff --git a/server/lemmy_db/src/community.rs b/server/lemmy_db/src/community.rs
index 03c47e463..3a78d769d 100644
--- a/server/lemmy_db/src/community.rs
+++ b/server/lemmy_db/src/community.rs
@@ -133,7 +133,7 @@ impl Community {
       .get_result::<Self>(conn)
   }
 
-  pub fn community_mods_and_admins(
+  fn community_mods_and_admins(
     conn: &PgConnection,
     community_id: i32,
   ) -> Result<Vec<i32>, Error> {
@@ -147,6 +147,12 @@ impl Community {
       .append(&mut UserView::admins(conn).map(|v| v.into_iter().map(|a| a.id).collect())?);
     Ok(mods_and_admins)
   }
+
+  pub fn is_mod_or_admin(conn: &PgConnection, user_id: i32, community_id: i32) -> bool {
+    Self::community_mods_and_admins(conn, community_id)
+      .unwrap_or_default()
+      .contains(&user_id)
+  }
 }
 
 #[derive(Identifiable, Queryable, Associations, PartialEq, Debug)]
diff --git a/server/src/api/comment.rs b/server/src/api/comment.rs
index 79b7b2c79..c461f7921 100644
--- a/server/src/api/comment.rs
+++ b/server/src/api/comment.rs
@@ -474,11 +474,11 @@ impl Perform for Oper<RemoveComment> {
     }
 
     // Verify that only a mod or admin can remove
-    let mods_and_admins = blocking(pool, move |conn| {
-      Community::community_mods_and_admins(conn, community_id)
+    let is_mod_or_admin = blocking(pool, move |conn| {
+      Community::is_mod_or_admin(conn, user_id, community_id)
     })
-    .await??;
-    if !mods_and_admins.contains(&user_id) {
+    .await?;
+    if !is_mod_or_admin {
       return Err(APIError::err("not_an_admin").into());
     }
 
diff --git a/server/src/api/community.rs b/server/src/api/community.rs
index 5e84bc6c6..f4ba15fb3 100644
--- a/server/src/api/community.rs
+++ b/server/src/api/community.rs
@@ -802,26 +802,15 @@ impl Perform for Oper<BanFromCommunity> {
 
     let user_id = claims.id;
 
-    let mut community_moderators: Vec<i32> = vec![];
-
     let community_id = data.community_id;
 
-    community_moderators.append(
-      &mut blocking(pool, move |conn| {
-        CommunityModeratorView::for_community(&conn, community_id)
-          .map(|v| v.into_iter().map(|m| m.user_id).collect())
-      })
-      .await??,
-    );
-    community_moderators.append(
-      &mut blocking(pool, move |conn| {
-        UserView::admins(conn).map(|v| v.into_iter().map(|a| a.id).collect())
-      })
-      .await??,
-    );
-
-    if !community_moderators.contains(&user_id) {
-      return Err(APIError::err("couldnt_update_community").into());
+    // Verify that only mods or admins can ban
+    let is_mod_or_admin = blocking(pool, move |conn| {
+      Community::is_mod_or_admin(conn, user_id, community_id)
+    })
+    .await?;
+    if !is_mod_or_admin {
+      return Err(APIError::err("not_an_admin").into());
     }
 
     let community_user_ban_form = CommunityUserBanForm {
@@ -901,26 +890,15 @@ impl Perform for Oper<AddModToCommunity> {
       user_id: data.user_id,
     };
 
-    let mut community_moderators: Vec<i32> = vec![];
-
     let community_id = data.community_id;
 
-    community_moderators.append(
-      &mut blocking(pool, move |conn| {
-        CommunityModeratorView::for_community(&conn, community_id)
-          .map(|v| v.into_iter().map(|m| m.user_id).collect())
-      })
-      .await??,
-    );
-    community_moderators.append(
-      &mut blocking(pool, move |conn| {
-        UserView::admins(conn).map(|v| v.into_iter().map(|a| a.id).collect())
-      })
-      .await??,
-    );
-
-    if !community_moderators.contains(&user_id) {
-      return Err(APIError::err("couldnt_update_community").into());
+    // Verify that only mods or admins can add mod
+    let is_mod_or_admin = blocking(pool, move |conn| {
+      Community::is_mod_or_admin(conn, user_id, community_id)
+    })
+    .await?;
+    if !is_mod_or_admin {
+      return Err(APIError::err("not_an_admin").into());
     }
 
     if data.added {
diff --git a/server/src/api/post.rs b/server/src/api/post.rs
index 390d291cf..15c38a3f6 100644
--- a/server/src/api/post.rs
+++ b/server/src/api/post.rs
@@ -770,11 +770,11 @@ impl Perform for Oper<RemovePost> {
     }
 
     // Verify that only the mods can remove
-    let mods_and_admins = blocking(pool, move |conn| {
-      Community::community_mods_and_admins(conn, community_id)
+    let is_mod_or_admin = blocking(pool, move |conn| {
+      Community::is_mod_or_admin(conn, user_id, community_id)
     })
-    .await??;
-    if !mods_and_admins.contains(&user_id) {
+    .await?;
+    if !is_mod_or_admin {
       return Err(APIError::err("not_an_admin").into());
     }
 
@@ -861,11 +861,11 @@ impl Perform for Oper<LockPost> {
     }
 
     // Verify that only the mods can lock
-    let mods_and_admins = blocking(pool, move |conn| {
-      Community::community_mods_and_admins(conn, community_id)
+    let is_mod_or_admin = blocking(pool, move |conn| {
+      Community::is_mod_or_admin(conn, user_id, community_id)
     })
-    .await??;
-    if !mods_and_admins.contains(&user_id) {
+    .await?;
+    if !is_mod_or_admin {
       return Err(APIError::err("not_an_admin").into());
     }
 
@@ -943,11 +943,11 @@ impl Perform for Oper<StickyPost> {
     }
 
     // Verify that only the mods can sticky
-    let mods_and_admins = blocking(pool, move |conn| {
-      Community::community_mods_and_admins(conn, community_id)
+    let is_mod_or_admin = blocking(pool, move |conn| {
+      Community::is_mod_or_admin(conn, user_id, community_id)
     })
-    .await??;
-    if !mods_and_admins.contains(&user_id) {
+    .await?;
+    if !is_mod_or_admin {
       return Err(APIError::err("not_an_admin").into());
     }