For all the revisionists and amnesiacs of the Democratic Party: The Democrats' celebration of the deaths of their opponents(or wishing death on them) goes back at least as long as I've been following politics closely (over 20 years), and certainly pre-dates the Trump era. I think it started with the luatic fringe of the party, but that lunatic fringe has gained more control of the party over time. So as far as I'm concerned, you started it (like you started the redistricting wars).