[ahartman00]

because at one point the people arguing that certain races, genders, or sexualities are equal would have been the ones banned. That is the problem. Today's antisocial behavior could be tomorrow's norm. Unless you prevent them from making their case. That is to say, we also contract the set, we do not only expand it.

In addition, there is the problem of who 'we' is here. Today, the fringe on one side seems to feel it is self evident that they get to decide what is antisocial. They seem to be unaware that ~50% of the population is on the opposite side. And even more, they seem to be unaware that not everyone on their side takes it to such an extreme.