I'll address that question next time I have time to post, but I'll not that you post 4 times on this threat attacking me for not bowing down to the hate you've been spewing and not saying what you want time to say before you actually asked that question. Something that you'd know the answer to pretty well by this point if you'd have been paying attention to what I've been saying rather than trying to make up reasons to vilify me for not being willing to participate in and calling you out on your demonization and hateful attacks.
EVen here where you seem to be agreeing that camera aren't a solution, just a tool that can help if used properly, you still try to attack me for saying that in the process of pointing that out and even after we have evidence that that's exactly what the Chicago issue demonstrated. Had people called the problem solved by cameras in Chicago, nothing would have improved and the footage would never have seen the light of day. It's only because activists refused to let the polce rest on their laurels and held them to account that they got used properly.
So if you want my baseline answer, it's "Constant activism until there is no problem left". I don't have the fix for every single problem, but the solution- the thing that will ultimately fix all of the problems is constant, impossible to ignore, community pressure to fix them. Activism. Constant pressure to implement the things that we do know will work. Constant pressure to find solutions to the things that we haven't quite untangled yet. All the improvements in the world won't matter unless we, as a community, constantly force action toward making them and don't rest until the issue is solved.
Calling anything short of something that fixes _everything_, _once and for all_, a solution is just wordplay that tries to block progress by pretending that there's nothing left to fix.
Cameras are a useful tool, but they do not come close to fixing everything. Their utility only comes with pressure to use them properly. They're a tool that's useful for a specific task when applied properly, just like a bandaid, not a solution which is the thing that completely fixes everything.
If you can point to anything that's done more to fix problems than active, overwhelming community pressure to fix those problems (whose implementation and proper use wasn't driven in some whay by that pressure), feel free to point it out, but I've not yet seen anything that comes close.