Well, I'm conflicted on this. On the one hand, Islam has been violent and destructive from the moment of its origins. It's not just a question of a few bad apples or people falling away from their real religion. Muhammed himself set an evil example.
On the other hand, I agree with those who say they have met Muslims, and that they seem to be decent and honorable people.
What I will say, is that this issue needs to be raised and discussed. If Islam is like the Ku Klux Klan, then it needs to be banned or expelled. If Islam really had honorable, peaceful, tolerant adherants, then they need to be told to start acting to rein in their friends.
In India the British went through both experiences. On the one hand, in the Great Mutiny Muslim soldiers rose up, violated their oaths of service, and murdered their officers, wives and children in the name of Allah. On the other hand, some Muslim regiments remained loyal, and fought to suppress the mutineers. I'm not sure what the ultimate lesson of all that was.
But the one thing we can't permit is to allow it to fester, or to allow Muslim extremist organizations to speak in the name of America's Muslims, as they are doing now. It's a big problem.
"If Islam is like the Ku Klux Klan, then it needs to be banned or expelled."
But, we don't ban the KKK, either. You can find little knots of the racist cretins in many place. They march around in their sheets, with police protection.
Did you think the KKK was illegal? It isn't.