I had a landlord a few years ago, who asked me (more like made sure) I wasn't dating blacks. Or had really close black friends. When he started throwing out those questions, I was thinking, damn, this dude is really racist.
Anyways, I assured him I was not doing any of those things, and he let me rent the house.
After I got to know him, I found out his reasoning.
Two renters before me, was a single black woman with a teenage son. He never met the son when he rented her the house. She was very nice, respectful. Worked two jobs, one as a CNA. Within two months, the cops had been called to the house 3 times. Violence, drugs and vandalizing the old saw mill behind the house.
Since the mom was at work most of the time, the son would have parties and raise all kinds of hell. And the mom rarely knew what was going on, until the cops were called.
So, the landlord did an inspection and found holes in the walls. Bullet holes in the ceiling and roof. A couple of dead animals behind their fence, that had been shot.
So, no more blacks. Period. End of story.