Yes, violence is bad. However, in the recording, Casey Heynes is clearing trying to keep his cool as a terribly behaved child hits him in the face and taunts him. So, Heynes decided to stick up for himself, body slamming the bully to the ground.
Casey reportedly pleaded with the bully (whose parents should be ashamed) to stop hitting him. However, the bully found the taunting entertaining, and ended up getting some payback in the form of a body slam.
Both children were suspended for four days. Which seems unfair, due to the the fact that the other child, not Casey Heynes, was bullying, and refused to stop. Casey was clearly sticking up for himself.
"There'll be reprisals from other kids in the school and he still has to go to school somewhere," said Casey's father. "He's not a violent kid, it's the first time he's lashed out and I don't want him to be victimized over that. He's always been taught never to hit. Apparently other people's parents don't teach their kids that."
Obviously bullying in schools is a huge issue, and violence of any kind can not be tolerated. However, what is a child to do when a bully just won't stop? The other children around were obviously not interested in helping Casey Heynes, or getting an adult who would. So, he fought back and body slammed his bully. Should he have been punished in the same way as the other child?