Dillion believed in white superiority, white pride, and that anyone who believed in the races mixing is just deluding themselves. He believed his race (white) was on the path of extinction if no one did anything soon. It was how he justified the murder of the black man, those reasons, that indoctrination. He told himself he didn't have to feel any other way but proud. The man had touched something that didn't belong to him, that couldn't belong to him, so he had to pay a price. 'They' couldn't just keep being aloud to take things. Hatred can go both ways, and there is a such thing as retribution, he learns those things in ways that are sure to stick.