[eivarv]

It depends on what "bad things" are.

I'm not religious myself, but I think there's a clear cut difference between criticizing or scrutinizing an idea (the religion to which you subscribe – or political ideology, for that matter), and "otherizing" its subscribers by way of negative generalizations.

That being said, I agree with others in this thread: People that are unabashedly rude in public might not be the kind of person you'd want to have to deal with on a regular basis.