Personally I think folks are mostly confusing police racism with hypercaution brought about due to fear of guns.
And then local folks who experience more policing (which tracks socio-economic trends) find themselves at the sharp end of the hypercaution. More black people live in inner city conditions. Therefore they experience more of the brutal police tactics that are created in fear.
Doesn't much matter if someone is armed. It's the fear of it that results in operating principles that are harsh.
I think it is mostly a second amendment issue and an economic class issue. In disguise as an issue of skin colour. Although I daresay there are individual examples of racist behaviour and maybe even a very few local examples of racist departments.
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