Bullying

I don't fully understand why people bully because it seems so unnecessary to this world we live in. Once when I was walking home from school with my friend I witness an encounter of 4 South Regional School students that were messing around with a small kid. At first it didn't seem much because the other 4 were laughing and what seemed playing around. It's all fun and games until someone gets seriously hurt. The small kid fell to the ground and none of the other boys seemed to be concerned or helped. Instead the other boys continued to laugh and push him and one kid even sat on top of him. The poor little boy was screaming stop and the other boys didn't even stop to think of what they were doing. My instinct was to immediately stop the boys and ask them to stop but I ended up pushing the boy off the one on the floor. I told them why they were physically bullying the poor kid and they simply said that they were just messing with him to me it wasn't right. I went off on them ranting how immature and dangerous bullying can be. I do not know why these kids bully in the form that they think is alright. Children should be knowledgeable of what is right and wrong at a early age to prevent such incidents to happen. Maybe a child bullies because they themselves are bully or simply have anger issues. Whatever the case may be bullying should not exist in any part of any community.