So the Westboro baptist church pickets the funerals of dead American soldiers (amongst others) calling them "faggots", so yes it does happen, just not by Muslims.
Firstly, they have a very small following. Less than 50 people.
Secondly, their "right" to protest has been all but wiped out, with differing States classing their actions a felony, which carries jail time & a massive fine.
Youll always get get these kind of tw@ts, in any country or religion. But the key point there, is that the correct authorities have moved to stop it completely. Meanwhile, over here, that swift & sensible action hasn't hasn't been forthcoming. Can you honestly tell me, the likes of Choudary, should be allowed to conduct his marches & demonstrations, in which he implores death & suffering on people like you & me? I.e. People who don't share his beliefs?