What are Trump supporters listening to?

Why do Trump supporters respond to criticism of Alec Baldwins stunt double, not by refuting the criticism, but by pointing at the opposition (usually Hilary) and showing her faults (God knows she has a few) or by attacking the critic, with tags like "Libtard"?
I get that the system was broken and needs to be changed. But maybe we can address the quality of the guy who got the job, even if it was by default, instead of the old magicians, "Look over there" trick..