Very doubtful. In the 20th century, up until the 1990s I would buy this (to an extent depending on how far back you are going) but now it does not stand to reason. This is another conspiracy theory and fails for the same reasons they all fail. How would any cop pull off such things?! In this day when everyone is actively searching for police misconduct, most cops go through extremely intensive education and training on how to deal with situations in the proper manner and the reward for being a whistle blowing cop is MUCH greater than whatever satisfaction you imagine a cop to get from beating innocent people and there are literally cameras everywhere. Seriously how could cops pull this off even as a hypothetical?
I am going from personal anecdotes here so I understand you doubting me but I come from a predominately black family. My father, brother, sister, niece, cousins, ...all black(my mom and me are the only white people I know in my family). As such I have almost always (I say "almost" because I myself find any white man claiming to have never had racist feelings or perceptions doubtful to say the least) been anti-racist. Most of the friends I have had in my life (by a very large number) have been black, Hispanic, Asian...non-white. I have spoken with a LOT of minorities (mostly black men) and from that I get the distinct impression that there are very few of them who actually fear the police in the way you describe and even a handful who think the BLM movement is a silly trend they aim to take advantage of if they ever get arrested (again) because this minority among blacks are thinking "Free money for life!", just like the guy in Baltimore who tried to slam his head against the police van so he could claim he was beaten but accidentally killed himself via a protruding bolt.
As Morgan Freeman and Lil' Wayne tried to say to some degree there is a LOT less actual racism going on than there is talk of racism. Sure we can look at Trump's election as indicating the converse but again I think this is the panic-stricken death throes of the white supremacist movement. They are looking at all they once were familiar with and fear the changes that have come and are still coming. They fear being the minority.
Move to Los Angeles County.
Or really, anywhere outside your own ass