Bullying is one of the most prevalent problems taking place in schools today. While in some cases it is limited to verbal taunts and teasing, bullying also very frequently crosses the line into physical abuse, where the victim is subjected to blows and bodily attacks from other children.

Have you or anyone close to you ever been bullied to this extent? The following video will show you what can happen when you say "Enough is enough," and stand up to your aggressors. In it, Australian student Casey Heynes is punched repeatedly by bully Richard Gale--who, surprisingly, is the younger and smaller of the two boys. Watch as Casey takes hits to his face and body--and then decides to stand up for himself, once and for all.

But that's not all; Casey's story goes way beyond this singular encounter--in fact, it has affected millions of people all over the world who've seen him take down his cruel attacker. Below, you'll find Casey's full interview with Australian news program A Current Affair (ACA), where he details his struggle as a longtime victim of bullying, how this most recent (and probably most triumphant) brush with bullying felt like, and what he has to say to other kids who are currently going through this ordeal.