The left ruins everything.
It’s true; leftism is humorless and they’ve made everything people used to joke about into some form of crime, either “hate speech” or “microaggression” or some other invented nonsense term.
And not only are they humorless, they demand everyone else be so also. Remember the grilling these people gave a rodeo clown who had the temerity to dress up as Obama?
All that remains, humor-wise, once the Left has done its thing, are poop jokes. And every last poop joke that could possibly ever be made, was made by the end of the first year of Obama’s first term.
Now Trump, he’s a great subject for humor. Very naturally lends himself to it. But the Left has no sense of humor so all they can do is make taunts and threats while smiling, that’s their best approximation of what is to them a completely alien phenomenon.