What do you think are some common solutions that could be centered? I would like to see full decriminalization of drugs as part of that.
Every side has a slogan like "defund the police" or "law and order" and they can tell you what they don't like about the system. But politicians don't have a specific plan or message. This plays right into the hands of right-wingers. They don't need a plan because they're fine with the status quo.
Any solution has to come to grips with three huge realities. First, policing has a massive PR advantage in the news, in scripted drama, in reality shows, etc. Second, policing is seen as the only solution to "crime" which people generally agree is a problem. Any alternatives are beyond what people currently see as achievable. Third, policing is a local and hyperlocal issue that can't be solved with an executive order or a few bills. All of those realities make it extremely difficult to fight policing. Any resistance to the status quo has a ton of work to do. The status quo doesn't have to do anything. That's one reason why all or nothing solutions are very difficult.
So that said, I think there are more areas of agreement with respect to criminal justice as a whole than there are for policing specifically. I think there is a growing consensus on the left about decriminalization of marijuana. If more people can explain what decriminalization means in practice, I think you could get more people behind treating drug use as a health and wellness issue instead of a criminal justice issue. That's the demand side. The supply side is more of a challenge.
I think you can also develop a broad consensus on the left and center-left about getting rid of private prisons, improving the treatment of the incarcerated, use and abuse of prison labor, and rights restoration. As I've said before, Democrats can unite around protecting basic human rights and human dignity across a variety of issues (pro-choice, LGBTQ+ rights, educational equity, etc).
Once we recognize policing is so local, the national message can be to vote in Democrats and pressure them to work with the community to determine how best to allocate resources.