Irrelevant. My comment was that racism and shooting was the easy way out. Mindlessly following racist policies is also easy. What's the difference between a racist and one who mindlessly follows racist policies? There is no meaningful distinction. All that matter is the act. The act is unambiguous. The statistics are unambiguous. The result is unambiguous.
No, racism has to do with the intent behind the act. If he's finding excuses to pull over black drivers himself, then he's a racist. If he's simply following a set of procedures laid out for him on how to do his job, then there's nothing racist about his own actions, regardless of whether or not the policies themselves happen to be racist.
It's the statistics which are irrelevant. We're talking about the attitude of this one individual and statistics can't be applied to specific individuals.