On one hand, bullies are usually from shitty families. But I don't think it gives them justification to lash out on others. Instead, they should know not to do it because they know how it feels. But they're kids and without guidance, they act on impulse. So, really, the bullies should be also the focus of help and rehabilitation. The victims don't usually speak up anyway for fear of making things work. And as sad as it is, others wont help because then they could be put on the shit list, too. Not to say dont focus on the victims. They need help to cope with the trauma. But they're like a symptom and the bullies the disease. If we only cure the symptom and not the disease, then the main problem won't stop.

Side note: I had a horrible experience with some bullying today. Social media but damn this article hit home as it reminded me of how my sister was bullied in school and she never told any of us at home. No indication whatsoever. I had a teacher who tried to bully me but it reached my parents so that got resolved at least.