Why do so many people hate on the Oakland Raiders?

I agree with Anthony Pena, All the Mexican gangbangers are Raiders fans(No racism intended) Hell even my next door neighbors are mexican gangbangers and they have a big Raiders flag on their porch. Probably dont even watch them. But to answer your question, I'm a diehard Chiefs fan and i don't hate the Raiders. I respect them and their fans because their fans don't talk trash and act like they're the best when they have a losing record like Denver and San Diego fans. I hope the Raiders do better than the Broncos and Chargers this season. I really do hate Denver and San Diego though. Arrogant s.