dubstepped
If cops are fixing reports to make things look better why would one assume they're only doing so when blacks are involved?
Not ALL cops fix reports, not ALL incidences need report "tweaking". Not ALL cops are morons. But since many that serve / have served as cops view blacks as less than human and perhaps have other mental problems, the tweaking will become more necessary when/if they are mistreating and/or killing blacks.
Cops are human, some are good, some aren't. I bought a cop lunch a couple of months ago as we sat at a bar one mid-afternoon. I had lots of questions for him about all of these issues. He believed that police forces aren't perfect, but they are better than they used to be. I believe him.