http://www.cnn.com/2013/08/06/opinion/englander-bus-bully/index.html?hpt=hp_t4
It's a bit more complicated than that. I'll explain. The 3 bullies are drug dealers. The kid getting beaten told on them to the school and somehow word got out. So the 3 drug dealers are "taking care of business" if you will.
Now, the question at hand. If you're the bus driver do you intervene knowing that you risk getting pummled also.
Anyways, in the video you can see the bullies pounding on the kid. You don't see the kid though.
I dunno if I would intervene. Police said he should have done something, but what can you do. The bus driver told them to stop.
My opinion, is you keep your mouth shut unless you're involved directly in a situation. You don't go to the school and report them. You're just asking for trouble. (Unless a murder took place, but what the **** is the school doing not protecting the identity of the teen.)