Eff that. That man dealt with his sons bullies. The only reason there is an issue is because he's an adult and they're teens. I think he did an appropriate thing.
First thing I noticed too. I hope the father didn't do this based on "may have"s. If you are gonna fuck up some kids make sure they are right kids that did some bad shit. Regardless, I'm not saying he should have done this... but I understand.
Shit, you really can't blame the father. Sadly most people's reaction to bullying is inaction, parents included... Well it seems that way to me at least.
There doesn't need to be anymore to the story. This kind of silly shit happens all the time, and it shouldn't. There are petty punks out there that live for making the lives of other people miserable.
I recently dealt with a similar situation involving my nephew. I didn't hurt the kids, but I do admit to showing up there in person and putting some fear in them. They, in my opinion, had to believe that there would be legitimate consequences for continuing to threaten my nephew with knives and constantly wanting to pick fights with him for no reason.
It just rubbed me the wrong way to see it happen. I was there when this kid was born, and I'll be damned if some little pieces of crap are going to end up harming him. Sure enough, they all saw him at school today and didn't bother him, a few even apologized. They rode the bus with him, even talking to him on friendly terms. They all went their separate ways when they got off the bus. Maybe they're only doing that because some huge guy showed up at the bus stop and approached them all, but it so far seems to have gotten the job done. And I'm well aware that they could have involved their older relatives also, but that's something I'm prepared to deal with as it pertains to the safety of my nephew.
I much rather do something than sit around and wait for something terrible to happen, wondering if maybe I should have done more.