The numbers came from the attorney generals office. Apparently there's a form for which these measures must be checked off for each stop.
As for camping out in crime ridden areas, the town has an area of about 6 square miles so that really doesn't make sense that they'd have to camp out like that. You could be anywhere in a couple minutes. This aside from the obvious profiling involved in staying in just the black side of town......if there even is such a distinct line of separation.
They covered existing warrants in reasons for searches but not stops. Black 369, White 14.
But if you think about how a cop would come across the knowledge of an existing warrant prior to the stop, I'm not sure the answer is gonna lead you to a different outcome. How would a cop know who has a warrant prior to the stop? He'd run the plates. If they're pulling blacks over at a ridiculously higher rate for everything, it's pretty safe to assume that they'd be running plates at a higher rate too.
I mean.....if you'll attribute their presence in a certain area as a result of crime, and it just so happens that blacks live in that area, it only follows that blacks would have warrants because they're criminals and running their plates will be a likely hit. At this point though the only reason you have for running the plates is race.
There's really no way to justify the numbers. They came directly from the Ferguson Police as simple check boxes that were sent to the AG.