Mastodon server instances already have blocked lists of "banned" instances. There's also a common ban list on github, so new server admins can join the federati

Mastodon server instances already have blocked lists of "banned" instances. There's also a common ban list on github, so new server admins can join the federation in a "normal" way. The ban list has some pretty messed up instances it rightfully bans, but they either tend to be illegal or far-right. Far-left content is spread and encouraged. Note: I'm not trying to take a side in this, and I don't try to identify with any particular "faction" in the federation space.