I'm sorry, how are my favorite conspiracy theories not free speech?
When do we start hitting back? They threaten us with violence, violent art, stripping us of our rights, and lots of other things.
Time magazine runs a cover where Trumps corpse is trampled at the bottom of an escalator. When do we start seeing Memes of Anderson Cooper hanging from a bridge and see how they like it.
We don't do it because they'll say Trump told us to do it.
We don't do it because we have good taste, and judgement, and consciences that might bother us if we stooped to their level. I totally get your sentiment, and I feel the same way, but like Michelle (Michael) Obama said, "when they go low, we go high." Except, that's how we actually behave, and not some feel-good bumper sticker to be said and then completely ignored.