I disagree that their goal is to get banned, thus I had a different approach to this problem.
Lets say, your home window is often broken by a neighbor boy who plays baseball, is his goal to get all your windows shattered?
I think everyone is at least reasonable to themselves, so their action must make some sense somewhere.
If we can not solve the incentive behind their action, then we have to kill them in real life to get rid of their influence, it is most bloody violent government do to protesters.