You missed the point of my post. Let's not make a policing issue into a race issue, because the fact is that all people tend to ignore problems until they feel personally affected. Most people don't have to deal with asshole cops except as an inconvenience, which is why most people don't take it seriously. That fact has nothing to do with being of any race.
My previous question was rhetorical, since what we did was to give them moar firepower. Overkill is the American Way. I'm not saying it's smart or proper, but that's our MO. Hijackers on planes? Ban fingernail clippers and install full body scanners. A city has an incident with armored bankrobbers? SWAT teams for every city, complete with APCs, and automatic rifles for PDs. School shootings? Ban all weapons at all times in all circumstances, expel and charge kids over pocketknives. Drug problems? Declare a war on all of it, imprison everyone possible, stay the course for decades.
Last, throwing out non-recorded arrests has less to do with proving guilt than it does with protecting citizens against convenient lapses in police oversight. It's the same rationale that makes illegally obtained evidence inadmissible in court.