Jeff Greenfield is asking for this iof a state university in a state in which these examples represent the official attitude of the State government entire?
At least some of these ranting leftists, maybe all of them are seriously hoping to gin up real assassination attempts on the President and his officers. I hope the Secret Service was not compromised in the Hussein years and that Trump's own team is rock solid. It only takes one agent swayed by offers of great wealth to be effective.
If the President is successfully murdered the future of the nation is that of Rome after Julius Caesar was slain. It will be Byzantine changing of executives by murder as the normal way succession works. This is not the 1960s when the whole country was horrified about the killing of the President and we know what eventuated from that, a radical advance of the Nanny State and its accompanying corruption. If it happens this time the results will be infinitely worse and lethal to what remains of the Republic.
You bring suggestions of Imperial Japanese governmental policy dispute resolution during the period ~1920 to ~1945 where policy was influenced by assassination. That did not end well for Japan or most everyone else around the Pacific Ocean.