This country made membership (you were likely to have an FBI tail for just belonging) in the mafia a crime because of their criminal actions. Why should islam be any different?
Wrong. Being a member of a crime family has never been a criminal offense. Criminal actions that members of crime families are criminal offenses. No one has EVER been tried for being a member of the mafia, EVER.
La Cosa Nostra is not a religion. Islam is, albeit a sick one. The First Amendment doesn't distinguish between religions we like and ones with which we disagree.
"This country made membership (you were likely to have an FBI tail for just belonging) in the mafia a crime because of their criminal actions. Why should islam be any different?"
On what planet is the mafia a religion?