Yup. Took my kids to an anti-bullying session at the local karate school, and while their presentation was a bit more mild, it had the same impact. Basically:

1. fists up and be loud
2. block any attacks and push them back while also being loud
3. (implied) if they don’t stop, let 'em have it (they taught some kicks)

This applies as well if you see someone else getting bullied. The main goal here is to scare the crap out of them so they leave you alone.