There are as many reasons for bullying as there are bullies and victims. If a bully doesn't have a reason, s/he will find one. I grew up in a neighborhood that seemed to be full of bullies. One would throw rocks at me in the summer and ice balls filled with rocks in the winter. When I started crying, he'd call me a cry-baby. The only reason he did this is because he was a bully, and I was there.
On the other hand, my next-door neighbor was constantly annoying me. One day I had enough. I took off my shoe and started hitting him with it. I just wanted him to cry, but he wouldn't. The bullied had become the bully. And that's the way it often is.
Thank goodness I had parents who stepped in. When I was bullied, they would call the boy's parents. When I tried to be the bully, I was immediately taught right from wrong.
As for the boy who threw the rocks, I guess his parents didn't step in. About a year ago his name was in the paper for domestic abuse. It certainly didn't surprise me. I was only surprised that I hadn't read his name in the paper a long time ago.
There are no easy solutions for bullying. It has been around forever. Throughout history, there are stories of bullies. We all went to school with them. Sometimes they are parents or teachers or bosses. Wherever they are, everyone else must learn to deal with them. How much easier it would be to stop it at an early age as my parents did with me.
Schools and organizations are trying to combat the problem, but it will take everyone, including students, parents, churches, and the community. There are also programs that can help. A simple Internet search for "anti-bullying programs" will turn up quite a few. One place to start right now is with "No Name-Calling Week" January 25-29. You can register or get more information at http://www.nonamecallingweek.org . I'm sure it won't be the ultimate solution, but at least it's a place to start.