I think the difference today is that a lot, possibly most, of bullying is psychological. Back in the day, you picked out the ring leader and took them on, their supporters dissipated. With social media, it's unclear who the leader is. It gives those who won't speak up in public a voice, and sometimes, on occasion, it's pure poison. They don't know how to fight physically but they learn quickly how to manipulate others to follow their lead and to do their bidding.
I have never had a fight but was called out a number of times at school. The idea of being punched never appealed to me, but I at least had the sanctuary of home. The bullies didn't know where I lived, as did none of their entourage, and usually the issue sort of went away on its own - perhaps the antagonist had quiet time to reflect too. This sanctuary doesn't exist anymore. The victim is constantly persecuted and the bully is continually re-energised.
Reacting today with violence is something I truly advise against. Social media is the conduit by which this poison spreads, and it's turning some kids feral.