He didn’t mock Trump. He just gave another example of the left having no argument other than to scream NAZI, RACIST, HOMOPHOBE, SEXIST...etc.
If anything the Nazi’s would be the people that can’t even bring themselves to say Radical Islam. The people who have been nothing but hostile to the Israeli’s. The people who support an organization that murders innocents in the womb by the millions and laughs about selling the body parts over their lunch salads.
They are the true evil in this world...
Evidently you did not watch, he mocked him by NAME and gave two examples, one of the swastika, and the other of an A$$hole, then stated that Trumps decision making process evidently showed that he was an A$$hole.
https://www.youtube.com/watch?v=t1UnKN3zGlk
I find Colbert repugnant, and changed the channel, it was like watching a slow speed train wreck during the sketch, I could not believe he was saying what he was saying, and thinking it was funny...what it was in the least, was disrespectful, of a possible President, and a complete lack of class in the extreme.