I doubt if any of these people really rent on Airbnb, because people "stealing stuff" and even "trashing the place" are NOT that big of a problem. That rarely happens, and when it does, the replacements/repairs are easily affordable.
A FAR bigger problem is undeserved bad reviews. A one-star or two-star review can cut your bookings in half and cost thousands of dollars over the following months.
I have rented to black people several times, and have never had a problem. They were friendly and quite tolerant of little problems that cropped up.
In my experience, the absolute worst guests are French people. They complain about everything, and act like entitled jerks. I have had French guests leave bad reviews because of rainy weather, or heavy traffic from the airport, as if that was my fault. I guess they feel they are getting even for what happened at Waterloo.
Note to French people: America had nothing to do with Waterloo. That was the British.