The solution is to give them as little attention as possible. If you can't ban them, don't give them any more attention. They've managed to weasel their way into this society and there's no easy way to get rid of them. Remind you of any other extremist groups?
The amount of news vans and helicopters I saw here around noon was sick. They were hoping for something like this and the protestors played right into their hands.
They don't go away. You're naive to think they'll just give up given on who we have in office right now.