Why go to the police if they’re not helpful? If you have video of criminal activity, you could speak to someone at the DA’s office directly — the DA is the one who decides whether to press criminal charges, not the police.
If the DA refuses to help, one could always go to a local newspaper or the local cable channel. Bored local media sometimes jump on those sorts of things…
But I’d try some sort of segregated access agreement before playing hardball. After all, you still have to live next to those yobs, so may as well not make them hate you too much.
