Introduce BuddyPress Block Users :

BuddyPress Block Users allows users to block other users on BuddyPress sites. If you are creating a BuddyPress-based community, the ability to let users block others is very important. It can help make your community safe for your users.

Features:

• Role-based user blocking for BuddyPress. You can limit which user roles are allowed to block other users.
• Role-based user whitelisting. You can limit which roles can not be blocked.
•  You can enable automatic unfriending/unfollowing on blocking.
• You can force the user to add a reason while blocking another user (it is optional).
• Admin notifications of user blocking(optional).
• Admin notification of user unblocking(optional).
• You can apply user-specific restrictions based on context.
• You can disable sending friendship requests from blocker users to blocked users.
• You can disable sending friendship requests from the blocked user to the blocker user.
• You can disable sending a private message from blocked user to blocker user.
• You can disable sending a private message from blocker user to blocked user.
• You can disable public message(activity mention) from blocker user to blocked user.
• You can disable public messages (activity mention) from blocked user to blocker user.
• You can restrict blocked user profile view by blocker.
• You can restrict blocker user’s profile views by blocked users.
• You can hide blocked users from members listing for blocker users.
• You can hide blocker users from members listing for the blocked user.
• You can hide activity posts of blocked users from blocker users.
• You can hide activity posts of blocker users from blocked users.
• You can hide the activity comments of the blocked user from the blocker user.
• You can hide activity comments of blocker users from blocked users.