The argument of the report so far, blacks are being targeted and the proof is the high rates of xyz among blacks. It's Holder's old canard disparate impact. The logic being if more of one demographic are being arrest for x it means systemic racism must be the cause. Same old song.
One of the main problems I see in the report is that it doesn't provide specific enough information. It's working on the premise of a 1 to 1. By that I mean, it assumes that one person is identical to another. For example, two people get pulled over, one is searched and the other is not. The only difference given is race but nothing is know about the individuals pulled over. I've seen this in other reports similar to this one. Nothing new really in the report.