I think the sad thing is that a lot of the time, people are mean because in some twisted way it makes them feel better about themselves. I don't think half of them even realize that's what they are doing and how hurtful they really are being...unfortunately this problem doesn't ever stop...adults are just as caddy and mean to each other in their own way...I think the only solution is just to find your own way to block out the shallowness. I know it's not always easy :)
They don't think about how other's feel. It makes them feel better to bully others, as it gives them a sense of power. In truth, they to that so others would think of them like the person they are bullying. It's upsetting, I know. I've always been in the bullied position, but I've been in the bully position a few times as well. And I really, really, regret it. I only wanted to fit in, but bully other's didn't really help. I might have even made it worse.