It's about differentiating (i.e. creating a distance) between speech and our reaction to it, or, in other words, it's about taking responsibility for our reactions.

In my opinion, prohibition of symbols, under the premise that they're subversive, like the Nazi ones, is one of the biggest cultural blunders of our time. It castrates entire generations of the possibility to experience the difference between ideas and their effect on us. It is ceding to the symbols, saying "you have power over us, with which we cannot come to terms with, the only thing we can do is prohibit your use".

The seeming culture-wide inability to discuss politics, religion or other dividing topics in a constructive way is part of the same phenomenon, in my view.