In their case, they fear that President Obama is literally walking around with a target on his chest.
Well all the Presidential assassins and attempted assassins, that weren't attention seeking or barking mad, seem to have been progessives. Czolgosz (anarchist), Oswald (Marxist), Zangara (anticapitalist). In addition Booth was an actor and Guiteau a lawyer, so they were most likely Democrats.
Actually, Guiteau was a Republican. His fixation on Garfield started when he felt he deserved to be assigned as consul in Vienna because he had given a few stump speeches promoting Garfield.
Guiteau was from my hometown, and he was quite mad by the time he shot the President. I can freepmail you an article I did on him if you’d like.
Booth was a Democrat...almost all Confederate sympathizers at the time were copperhead Democrats.
Every president walks with a target on his chest! Andrew Jackson escaped assassination when his attacker's pistols misfired.
Sarah Jane Moore who tried to kill President Ford was a radical leftist.
Squeaky Fromme who once appeared on the Lawrence Welk show tried to kill President Ford too, over the plight of California redwoods. She was also way left of center but then she could also be classed in the barking mad category.