But that's like saying that little neighborhood "mosque" with the hate preacher should be kept open because well, it means the "Muslim" extermists have their community there...
I put mosque in quotes because I don't recognise hate preachers' claims to be a representative of the Muslim religion.. and yes, hopefully police are arresting hate preachers and shutting down their congregations. If there are legitimate preachers there, of course the mosque shouldn't be shut down.