They know that if they do assassinate or do and miss, everything in the US will change. We’ve devolved from a semblance of democratic processes to authoritarianism.
Most of us see it, but it will become clear to the majority of people if they take that step. They’re afraid to take it.
I don’t think that Democrats are afraid to take the step to eliminate Trump. I think the only thing stopping them so far is that they haven’t reached Critical Mass of STUPID required to do that.
FJB’s campaign ad is just adding to the current level of STUPID. Watch out for the Looney Left.