In my city the minorities have a well known practice of slamming on the brakes for nothing, you rear-end them and they claim horrific, disabling soft-tissue injuries. Happened to my son and many, many other friends.
I no longer let any minority into traffic ahead of me. It’s not racist, it’s called protecting my insurance rates.
The scams
Swoop and Squat. A suspect vehicle suddenly swoops in front of you and jams on the brakes, causing a rear-end collision. Often the suspect car has passengers who pretend to have painful back or neck injuries, even though the collision was at low speed. The driver and passengers then make large collision and injury claims against your auto policy, for example.
http://www.insurancefraud.org/staged_accidents.htm