The government regulates morality all of the time. That is the purpose of things called "laws". A completely bogus argument. Murder involves the taking of someone else's life. Thus, the government is protecting the right of the other to live. However, what many deem to be deviant sex acts between two consenting adults does not violate anyone's rights. Just because the government won't regulate private acts that hurt no one (or at least, in this case, hurts no one except those that want to be) doesn't mean that they won't regulate anything. There's a long way between bondage and murder.
Not my point. Of course you have a right to do all of the kinky sex stuff that you like with a consenting partner of legal ageas long as you don't open your doors and charge for admission. At that point, you become a public nuisance and fall under constraint of the law. I'm not advocating laws against S&M. I'm pointing out that societies have the right (and indeed, the obligation) to enforce a moral code via the promulgation of laws. In this case, the offending action is not the practice of S&M, but rather the creation of a public nuisance.