Trump’s only true skill is the con, his only fundamental belief is that the United States is the birthright of straight, white, “Christian” men, and his only real pleasure is cruelty.
It is that cruelty, and the delight it brings them, that attracts his supporters to him. They share, with Trump, scorn and hate for the people they fear: immigrants, blacks, women, and the treasonous white men who actually listen to and support blacks, immigrants and women.
Trump’s ability to show cruelty through his every word and deed makes his supporters damn near euphoric. It makes them feel good, makes them feel proud, makes them happy, unites them.
As long as he makes them feel that way, they will let him do whatever he wants.