Seconded in full, save that I suspect in a lot of cases it's not just "interested in not seeing it" but rather silently cheering bullies on, on the same general theory as someone might, while finding the specific methods distasteful, approve in general of the idea of cross-gender rape as a corrective for homosexuality. (If that seems like an overly strong statement to you, consider that both "corrective rape" and bullying revolve around the use of violence to enforce a social norm. Granted, the former is much worse than the latter generally manages, but I'm increasingly convinced that the difference is more of degree than of kind.)

It's for reasons like this that, while pragmatically convinced it'll never actually happen, I am strongly in favor of the law treating adults who passively or actively enable bullying as it does anyone else who abets or conspires to a crime. Seeing the erstwhile principal of a school dragged off in irons, to be arraigned on suspicion of having been an accessory before and after the fact to assault and battery, seems to me just the thing to give every other responsible party, in every other school sharing the jurisdiction, powerfully to think. No, it'll never happen, but the once-bullied kid in me surely wishes it would.