Why are there so many bullies?!

In this community I have shared a recent bullying experience while in nursing school and I’m wondering what other nursing students think? Why do nursing students bully so much? If you’ve done it, why? I’m looking for solutions as well, the incoming classes of nurses are going to enter a field that is known for bullying especially those who are inexperienced. How do we make the change while in school and how do we establish a new community that stands against bullying as we enter the work force? Would students be willing to have parts of their courses have discussions about the topic?