An easy deflecting response to demands for change is always "what do you people want, anyway?" We've been given an extremely comprehensive list. I'll crib a summary from Molly Weasley at Daily Kos as she's done a good job of catching some details of a program that has multiple local, state and federal components.
Different pieces of this will take center stage in different localities, depending in part on who lives where and what the power relations are between various communities. Where Black people and other people of color are numerous and are able to exercise political influence (usually but not always by voting), it might be realistic to focus on police recruitment, training and community oversight issues. Where Black people have little power (almost all state level decisions), the core issues are likely to be for-profit policing, demilitarization (police don't have to acquire all that armament) and "police rights" deals that negate their duty to serve the people by protecting individual officers rights as employees.
Getting and keeping the Justice Department on the side of widespread oversight is unequivocally a political issue. Minimally, we can't afford a Republican president or an indifferent Democratic one.
Police have been substituted for a mental health system in most of our urban areas. A huge fraction of police violence happens when a mentally disturbed person confronts insecure officers with a military mindset equipped with badges, tasers and guns. Police also kill disabled personsdisproportionately. This is worst in communities of color, but our failure to fund services to the mentally ill happens everywhere.
As a fix, body cams are tricky. As police have usually done with requirements they display their badges at all times so we at least can know who did the bad deed, officers will figure out how to avoid the scrutiny they create. They will also fight to ensure that review of film is limited to their peers and it is never released to the public. Yet having the political fights over these issues seems a good way to build the struggle. It matters when majorities say "Hey -- that's not right!"
There's so much more. None of us lack for something to do.