"The trouble with fighting for human freedom is that one spends most of one's time defending scoundrels. For it is against scoundrels that oppressive laws are first aimed, and oppression must be stopped at the beginning if it is to be stopped at all." - H.L. Mencken
Saying that in America even the most morally repugnant people have rights doesn't mean you support anything about them, it just means you see the danger in allowing the majority to say "violence in response to speech is ok, so long as it's done by people we like against people the majority deems "bad" That concept can quickly be turned against you in the future depending upon which majority holds power.
If we allow the mob to decide who is protected by our bill of rights and who isn't, those rights mean nothing. I am seeing way too many people who apparently believe that if they deem an individual or group morally bad enough, predatory extralegal violence against suddenly becomes justified, and the rights of those "bad people" shouldn't be protected. Weird, because using enforcers in the streets to threaten and violently attack people they considered "bad" was exactly what the Nazi's did. It's a hallmark of fascism and marxism and antithetical to American values. The Nazi's called them Browncoats. Today, the American left calls them "Antifa" I hate that the left in America has gone so stark raving mad that they're consistently putting me in the disgusting position of having to defend Nazis.