Why Rebecca Black's Friday getting so much hate?!?

it's sad. I don't like her song , don't get me wrong , it was pretty bad (especially since she bought something and never actually put any imagination into "her song" )but people just like to pick on the little people. the unknown, the young kids. also, people like to jump on the hate wagon. you see someone hate something, then someone else starts hating it. I wonder how many people secretly like it.