> a large body of people are convinced by their lived experiences [1] that police violence is racially biased, and this conviction is further supported by a massive number of known individual cases
Okay, we know that there's an effect. No one is arguing that black people not only feel that way, but interact with (and are killed by) police at a higher-than-white per capita rate. That certainly should be addressed, and is a major social concern.
I think we agree on how to interpret the data at least this far -- that there's an effect, originally identified anecdotally by black people but supported by data, where black people are killed by police more often per capita. (Numbers I've seen are like 2.5x per capita -- but order of magnitude, I think we can agree on somewhere between 2x and 5x.)
Where we disagree, and I think we're just going to have to disagree, is that this is evidence that there's a lot of systemic racism going on. (Think "70 cent" wage gap, not "95 cent" wage gap.)
I think we're seeing a little bit of active racism, a lot of lingering economic effects of historic racism, a little bit of active cultural maladaptation, and a lot of general police violence. (That's me "thinking about the issue with an open mind" -- that distribution is basically the prior on social issue breakdown.)
You seem to suggest that the data suggests just "a lot of racism", which is where I disagree: I don't think the evidence is anywhere near moving the needle from the prior of "complex weave of the usual issues" to "outright, ongoing, systemic racism".
> But if you think about the issue with an open mind, you're still going to feel pretty damn confident about what's actually going on.
Finally, I just want to say, that this argument supports literally anything that sounds appealing, regardless of how likely it is to be true. There's a long history of creating new problems while attempting to solve problems by adopting solutions that make no sense upon detailed analysis, but sound good or appeal to our emotions in some way.