White privilege is thinking that throwing money at the problem will make it go away.
I don't think we understand the current drivers of the problem enough to solve it easily. Catching the kids that actively engage in this gang warfare won't solve it, it'll just move it down the chain of command. Since it's cyclical, based largely on history and grudges, there's no easy way to resolve them in the minds of those angry about it. Chances are the parents, like the one at the end, are ignoring the problem, and can't do much more than that anyway since they're likely at work 40+ hours a week just making ends meet. Even if you could get rid of the grudges and history many have already been en-cultured into it so much that it would be difficult to get them to live any other way. It would take at least 8 years of constant counseling and vigilance to really be rid of it.
Moving them to different schools won't help, because it's based on their housing location.
I suppose razing the entire area to the ground might work, but this also isn't a problem that doesn't exist elsewhere, they'd merely end up in another gang in another place.
The school provides a safe haven, but it is not, and will not, solve the problem.
Outside forces can't change it. The individual families, parents, and others in the community need to take ownership of the problem, organize (ie, form their own gang) and self-police the entire area, 24/7. If it's done in the right spirit it might just work. Otherwise it might actually make things worse...