You can't watch this and not feel rage and indignation at what you're seeing and hearing. It's horrible beyond words:
And it was only natural once people saw the video that they wanted the teens arrested and charged with . . . something. They certainly deserve it. The problem, though, was that it wasn't clear they actually broke any laws. There's no law against being a jerk, and there's also no law requiring you to try to rescue someone when they're in trouble (except perhaps in Latham, Massachusetts). You're not even required to call 911. It's the right thing to do, obviously, but it's not against the law not to.