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.
I find the state fair, and NC State basketball and football games attract such large crowds near my home as to be a nuisance. Not the practice of playing sports mind you, but the nuisance they create. How can we go about getting these gatherings banned?
Don't even get me started on the nuisance that Jimmy Buffet causes around here or the seemingly endless stream of country music concerts.
Your 'public nuisance' is anothers pleasure.
The engaging in legal behaviour is legal and not the business of government to be banning the gathering of people to engage in legal behaviour on private property.