How, on your way to an apartment to make arrest, do you encounter a guy in the parking lot.... who you know isn't the guy you're looking for, cuff him, place him in a patrol car, run him, find out he has no warrants, find out he's the landlord of the apartments, and then ask for his help in making the arrest. And when the guy makes a complaint the response is that his detainment was "minimal?"
How is it not harassment to purposefully go to apartment complexes and conduct "ped checks" of people out in the open, and think your covered under Terry?
Again: anecdote of individual examples of wrongdoing (and even racial bias) do not prove systemic racial bias in the entire department.