He was very conscious of his looks. In the photos where he stands with Trump supporters, he sticks out like a sore thumb, and it has to be on purpose. Not surprised he would do the opposite when he decided to act.
His political father was probable a Trump supporter. And to speculate on something, I wonder if his mother raised him separately without his father. There was something on the radio about him going back to his mother’s nearby house after the crime to borrow her car.