Introduce Messenger Communities, the latest feature for structured, topic-based group chats.

Key Features: Describe how Communities will let users have topic-based chats that are very customizable and organized.

Benefits for Users: Explain that it provides an organized way in which users can interact, share resources, and discuss specific topics without the clutter of a general chat.

Potential Applications: Show potential use cases which go from hobby groups and professional networking, all the way to community support.

Privacy Controls: Show privacy controls in Messenger Communities that protect information about users.

Comparisons: Compare Messenger Communities to group chat applications such as Discord or Slack noting what Messenger does that others don't.

Conclusion: Summarize how this feature expands Facebook's aim of building community within its own platform.