The cops are not systematically murdering blacks, BUT this does not mean that there are not significant problems with the policing system that can be worked on. I think both sides would be able to accept that huge benefits could be reaped from police reform such as better training, better support for non-police based interventins etc. stuff that has been shown to work elsewhere. some of it might work in the USA and some might not, but BLM should appreciate that something would be being done and the cops should appreciate that they are getting extra support and aren't getting blamed for something they aren't doing.
maybe I am naive. I am not an expert here; in fact I am Australian so I don't even have first hand knowledge, but the solution looks worth a try from the outside, just needs the right leadership and commitment.