Dataloungers, you're my only hope.
So my brother and his wife bought a house about three years ago. It's in a not-so-great neighborhood, and their neighbor is an elderly woman whose granddaughter (and boyfriend) live with her.
The granddaughter moved some of her really shitty and trashy friends into the house, and they hold wild parties until early in the morning.
My brother called the cops, and ever since then, the trashy tenant - who has no job and sleeps all day - started harassing my brother. Whenever my brother is in his yard, or leaving for work, or just outside, that creep starts saying things from his window like, "you fucking pussy" or "fa***t" or "I'm gonna kick your ass."
This guy is a real weirdo. He never comes out. He just makes these threatening comments from inside the house, and now he's getting his friends to harass my brother and his wife, like driving up alongside the house, taking photos of them with their phones, and eyeing them up.
Recently, he even started making obscene comments towards my brother's wife.
My brother is at his breaking point, and is begging me for help, before he does something drastic.
Naturally, the cops are no help because they need proof, and this guy watches their house, and never does things when anyone else is around.
He almost certainly does this for a living, since he has no job, sleeps all day, and stays up all night partying.
I don't know how to help my brother. Any suggestions?