I have this discussion with my sister on an on-going basis. I think that the parents are to blame for their kids violent (bullying is violence, so that is the term I chose to use) behavior. You don't need me to tell you how out of hand aggression at school has gotten. If you don't see it everyday, that does not mean that it is not happening. You can bet your kid sees it and knows it firsthand. Just ask. Believe me you will get an earful.
My sister, on the other hand, does not think that the parents are to blame. In her experience, the parents of the bullies are sweet people who have no idea that their kids are bullies at school. So, my sis and I have opposing views when it comes to who is to blame. What do you think and why?