Trump supporters don't just look low-class, they are low-class.

Of course, since he has always shown great contempt for his idiot lower class supporters behind the scenes to his aides. He doesn't respect them at all and sees them as gullible pawns and fools that he can manipulate. Notice how he never invites or has any of these white trash types as guests at his private parties? That tells you all you need to know about who he respects as peers and wants to socialize with. For those occaisions, he only chooses to be around fellow rich people and pols.