> they had decades to change something and just about nothing happened, is a nuanced conversation about this realistic?
This is simply because it hasn't been a priority. It's good that this is drawing attention to the issue (assuming there aren't more important issues that aren't receiving attention as a consequence--I'm withholding judgment), but it's bad insofar as it's being portrayed as a race issue when there is apparently no racial component in police killings. I think the good outweighs the bad, but we could have it both ways.
> Plus, if they wanted a nuanced conversation it would help if they didn't shoot at and abuse media representatives.
I care very little about whether the police want more nuance or not. Americans deserve a nuanced debate, better data about police violence, a media apparatus that isn't overtly and deliberately optimizing for strife and division, etc.
> I don't feel distribution of fatalities is a great argument. The absolute number of officer involved shootings in the US is just ridiculous for a first world country, supporting those currently visibly affected shouldn't be too hard then, it would help others as well.
It sounds like you don't understand the argument :). It's not "we shouldn't do anything about police brutality because it doesn't have a strong racial component"--virtually everyone agrees that our rates of police violence are far too high (however, that doesn't mean everyone agrees that it's the most important problem). The debate (well, to the extent that this is a debate--it's highly taboo to try to understand and remedy these problems) is about the extent to which this is a racial issue--this is important because (1) it's important to our ongoing national dialogue (again, not much of a dialogue due to taboo) about race and political ideologies and (2) it determines how we go about fixing the police violence issue (if it's not a function of bias then anti-bias training won't help).