I once vaguely knew the headmistress of a local school who, in the midst of a lively scandal over a run of instances of bullying, declared β privately, of course β that it was all poppycock. There was absolutely no bulling at her school.
The bully never sees themselves as a bully. Nor indeed does their appreciative audience, up to and including, in some cases, the school principal (assuming they are not the individual doing the bullying at the time).
The bully is doing the Lord's work, putting the aberrant and eccentric on the path to self-improvement. Bullying is rarely premeditated; it's most often purely reflexive. "See something, say something." Also shove something, trip something, punch something in the side of the head, pull something's pants down in the middle of the playground, if necessary.