So a person who belongs to the KKK can be OK in your book? How about a Nazi?
When you belong to such groups it is only natural for a normal person to be suspicious. It would be foolish to not closely evaluate a person belonging to such groups.
It is possible for a person to belong to such a group and be a good person if they don't know the true goal of the group but Sandy, I think they are few and far between.
Again, I am glad you have this friend you trust as friendships are hard to build but don't ask us to trust all muslims because you found a good one.
Are you finished pounding on me?