Making laws that ban or forbid people doing or saying is fine, it's upholding the laws that's difficult if people are unwilling to obey. We live by consent and our biggest problem will always be self.
The Muslims have never been able to come to terms with the fact the God told Abraham to throw Ishmael and his mother hagar out of the his camp. Hagar was not Abraham's wife, but servant. God promised Ishmael that his decendents would be too many to count . Its from Ishmael with the arrival of the Prophet Mohammed some hundreds of years later that Islam emerged.
http://niv.scripturetext.com/genesis/16.htm all is reveal here.
Interestingly, the Prophet Mohammed thought it was satan talking to him while hiding in the caves. This is where Mohammed received the revelations about Islam, it was his wife that convinced Mohammed it was God speaking.