Exactly the point I made above. Since most of us will NOT accept immorality shoved down our throats, the only way the so-called moral relavists (in reality, purveyors of immorality) will get us to shut up is at the business end of a gun/threat of arrest.
There's no other way they will get most of us to acquiesce. Totalitarianism is what will happen.
There will be a revolution before that happens.