In 1492, the first blacks slave arrived on American shores
in 1865, slavery was officially ended.
It took about 372 years for that change to take effect and another 99 years for the Civil Rights act to be signed.
Change takes time
...that's exactly my point. Whatever change happened was done by addressing the problem as a whole. BLM is for all intents and purposes an anti-police movement, in the same vein as Occupy Wallstreet and similar anti establishment groups.
But you deflected the question (don't think I didn't notice). I'm not asking if BLM has saved the world. I'm asking what is BLM doing in that space to effect change, aside from waiting for the next black person to die in police custody?