Alastor is evil, but that's why we love him. He kills people because he feels like it and the show constantly portrays him as a psycho, so explanations like this are so dumb π
Did all these people here deserve to die too?
You can like a character even if they're evil
So many people are gonna use this as a way of "owning" Alastor apologists but this guy was probably some rich racist asshole and Alastor sensed it after he laughed in his face