> <i>the society must be intolerant of intolerance</i><p>This doesn't create a paradox unless you have an impractically broad category of "things that must be tolerated".<p>The US, via laws and (non-universal) social norms, has more narrowly defined the things that must be tolerated: things that cause no harm to others, where harm includes infringing on someone else's needs, rights, or safety.<p>Further, our government is more cautious and tolerant than our citizens must be. Citizens may treat people differently based on whether they're Nazis or not. The government may not.<p>This seems like the best and fairest system that's possible at the moment. The implementation is imperfect, of course.