I was about to moderate this discussion, but saw your post and decided to reply instead. Could you cite some examples of this? I live in Atlanta and have some activist acquaintances who would be interested in such things.
Just stuff I remember from years ago. I (thankfully!) haven't lived in Atlanta in a couple of decades, but I would be surprised if it changed. There was an off-duty cop on a bike who pointed a gun at a friend and shouted "FREEZE!" even though it's not certain what he was doing that was illegal. Then, there was the time I went through a red light that hadn't changed in about 10 minutes at 5 am (I assume it was broken). A police officer in his own car chased me down while flashing his high-beams at me. I assumed it was some nut or drugee, since this was downtown. I was chased by this guy until a police car with flashing lights blocked my path. I called out to the officer that some nut, right behind me, was chasing me. I was then informed that the "nut" was a police officer. They did not even give me a ticket, though. But, this was after the officer said I "must have enemies" and that was why I was scared of some random car flashing lights at me, and that even in other states, I should have known that car had a police officer in it. Basically, a line of shit so they could stay out of trouble if I complained.
I could only imagine what would have happened if me or my friend were black. We would probably both be dead now.