My grade school had a bully named "J.D.". He was bigger than the rest of us. Apparently he had been held back a few times, maybe even three times in kindergarten. In short, he was mean and dumb.
Then in high school he acted up in an English class, and out in the hallway the teacher invited him to take a swing at him. "J.D." took a swing at the teacher, and apparently that crossed a line that allowed the teacher to swing back in self defense. We soon learned that the teacher had been a boxer. He only landed one punch on the student, but the student was done.
I know that Trump's "J.D." isn't the same guy. But damn the similarities.
Biden stepping aside so that Harris could run was a good move. Trump could have done it too if he hadn't tried to have Pence killed.