Donuel's list has some good points. I think that it's important to remember that "systemic racism" is hard to detect - even those responsible may not realize the racism involved. A positive approach may be far more effective that "clamping down" on what may or may not be racism. One would think that the Detroit Police Department would be very sensitive about racial matters, since Detroit has been a black-majority city for so long.
But cops will be cops, and they tend to get carried away when they're involved in chases. Young cops tend to be heavy on adrenaline and testosterone, and a little light on experience and patience. I'm sure we've all seen irresponsible driving of police and other emergency vehicles - I saw some of that just last week. I think there's a good chance there was no racism involved in the Detroit incident, but it was certainly bad judgment on the part of the officers - and quite possibly criminally bad judgment.
I have to say I was surprised to see so many white police officers last time I was in Detroit (2010). I had assumed that the vast majority would be black.
-Joe-