Obviously the founders are long gone, we can't ask them.   I think they would be hurt that the society they hoped would develop from their own efforts wouldn't allow a person to speak freely.     Of course if one insults or attempts to belittle others, they should expect the same in return.

It used to be that we had some standards of civil behavior that were pretty common for most people.   I'd be the first to say the 'anything goes' liberalism in the 60's, led in part to condoning outrageous behaviors and uncivil conversation,(in response to the conformist 50's).   It also broke down some accepted, but deeply damaging prejudices.   

But we can't blame the 60's, every generation makes a Choice.    Vilifying entire groups of people as ignorant, bigoted, etc..is both crass and irrational, and will almost always create more hostility.    IMO, it is not a profile of a wise person.

I can't change any behavior but my own.   I'll take responsibility for what I write.