I had a coworker back in the 1990s who told me about heading to northern Litchfield County for a construction job. Black skin driving a pickup truck got him stopped. In that area you have small town cops with no real crime to worry about. In Fairfield County he didn’t have trouble. Being black isn’t unusual, and police did have real crime to worry about.
I believe it happens. I don’t believe these statistical studies prove it happens.