Well the band I hate the most is Justin Beaber. He's not really a band but it works!
Why I don't like him is because if you are a guy and your the 7th most popular girl on the internet, you have a problem. But I have to give him credit for getting revenge on a kid that hacked him phone number, and he got the kid's number that hacked him, and he said "Call or text me 123-4567-8900 (not his number) and the kid had so many calls and texts that his phone couldn't keep up. XD