People can sometimes be judged because others get jelous. Some times people think that because what you like is diffrent, that its bad.
In school, I read Death Note, listen to Punk-Rock music and other things that others think is weird, I gett judged.
When people judge others, most of the time, it makes that person feel better that they can bully someone thats weaker than them. I don't think they understand that one day that 'weaker' person will get back at that person.
People even sometimes judge because they are trying to cover something up like: "Oh, Amy like Billie" but the girl who said that might really like Billie, maybe she got teased for it and was trying to make someone else feel her pain