I need some advice,

Our local punk scene is pretty small. I am part of that scene but not in the inner circle where everyone is close friends with everybody. The issue is that pretty deep in that scene is one person who was abusive in the past. That is why he is banned from some leftist spaces. I don’t know any details about the abuse but he wouldn’t be banned from some spaces if it wouldn’t have been bad.

So he crossed a red line, and not trying to get him out of the scene would lack solidarity towards the victim as well as increase the chance of it happening again.

Does anyone have advice on how to go about it?