Because unfortunately people are similar everywhere. People here think they are smarter than right wingers because they believe different things, but they only believe different things because that's what they were taught/told to believe. A lot of them are also chronically online and desperately want somewhere to belong to; that's how cults form as well.

Put all that together and you have people defending an animal abuser just because he's politically aligned and the figure head of a community they belong to - cult.