Black on black crime should be really labeled poor on poor crime. Also there is something unqiue about the US experience, black people in the UK commit crime at a much lower rate than white people in the US.
That's because no one outside of the Black community listens to Black voices about Black social issues unless (1) it's positive attention to a rich Black person blaming the the moral failings of Blacks for the problems of Black communities and absolving White and wealthy society, or (2) it's attention (usually, historically, negative, but there are moments when that flips on one issue or another) to Black people questioning a trusted (by Whites) social institution and it's contribution to Black social problems.
Everything else is beneath notice of the wider society. It's talked about, but no one outside of the community is listening. Which is fine, except when they base their response to the issues on which they do pay a little attention to assumption that what they aren't hearing on other issues is because it's not being talked about.
That's disingenuous. Police brutality almost always comes up in the context of BLM and in this specific case the article made it a racial issue. You can't do that and then say "why are we talking about race" when (the general) you started the conversation talking about race.
Bring up racism and police brutality though and people strongly deny it's a problem.