Which explains why they couldn't simply radio in for some extra help for the kid, doesn't it.
When a kid needs help from the police, the best response is to tell them to call the police. Because that will make the kid wonder, isn't that what I'm doing now? Talking to the police? And then he'll learn that it's futile to ask the police to help you, because they won't. And he'll learn that you're on your own, and the best solution is to join a gang so that you have someone to turn to when you need help. Because the police have told you that they won't help.
That's the lesson this incident has taught. But that's okay, because the police are busy with the violent crime. Much of which is gang-related. You know, those gangs made up of people who are backing each other up. Because, when they were young, they learned the same lesson.