How do we remove the middle finger emoji from Slack's symbol set for our team?
This is not an official feature but there is a theoretical workaround, if you don't want users using the middle finger emoji in conversations. The easiest way is to delete messages containing the content.
To do this you must create a bot with moderator privileges, and ask it to delete any messages containing the phrase or prevent such
This is the middle finger symbols emoji code. Theoretically the bot will prevent them from ever posting a message that contains this symbol. If your trying to ban other emojis as well, you can find a list of codes here