Is this at all related to your brother?Honestly I think the victim's parents are at fault. How they treat their kids and not ask what happens every day at school, harassment is bound to occur. But if the victims don't open up, parents won't know and it will keep happening.
And also think before you blurt something out like he buys adult magazines and "relief" himself everyday.
Your last point, don't care about what other people think. If you like dancing/singing do it.