Early last year we had this brother who was confronting the sister's about how they were wearing their hijab. And he was also talking a lot of jihadist non sense to various members. We repeatedly told him to knock it off and tried to talk with him but to no avail. Finally, he was causing so much trouble; that we had No choice but to physically throw him out of the masjid. He starting attending another mosque and was eventually throw out of it also. Then one day he was arrested for terrorism and was all over the national news. What else could we have done??