And he didn't "order them to be shot", either.
He was President. We had a civil war. There were no rights read to the Americans that were killed on the battlefield. that was just one example of times when “due process” is not followed.
It was an example of when circumstances do not make the President ( whoever he is) not using “due process” before it is lawful to shoot an American citizen violating that “citizen’s due process rights.”.