It is human nature for groups of people to see themselves as right and other groups as wrong. This is especially true when the groups are defined in opposition to each other, as with political parties. Republicans are bad, Democrats are good.
When it comes to the problems with policing in this country, Democrats seem fundamentally unable to conceive of themselves as a big part of the problem. At best there is an argument about the Republicans being worse – which is true, and is almost universally true – that is used to deflect criticism. It is necessary to face up to the reality that many of the places with the worst problems with police violence are, and have been, controlled by Democrats at the local level for a long time. If you look at protesters and don't understand why they burn property rather than channel their anger into voting, the very obvious answer is that there is no imaginary future in which voting for Joe Biden and whoever they just elected Mayor will actually solve the problem. Republicans offer pure authoritarianism – they actively *encourage* police to be brutal – while Democrats have done nothing to stop them, or in many cases abetted them.
In my lifetime Chicago has elected one Democratic mayor after another, backed by a lockstep Democratic county board and city council and a veto-proof Democratic state legislature in many cases. All that has happened with the Chicago PD is that it has gotten worse. Much the same can be said for Minneapolis, St. Louis, New York, Los Angeles, and other places with notoriously bad police departments.
For decades Democrats have offered solutions that simply do not work. Training sessions that are ignored. Rules and regulations that are not followed. Oversight boards that do little more than rubber-stamp police. Always something technocratic, always something that sounds like a waste of time and money the moment it hits people's ears. People have been getting Oversight Boards and Investigations and Committees for as long as anyone can remember, and it has done nothing. With regularity, another person's name becomes a hashtag and a horrible video.
So when you watch senseless rioting and think "Well VOTE, silly!" is an answer, consider what the ostensibly liberal party has achieved on this issue and imagine how hollow that has to sound to the people most directly affected by police brutality. Ferguson and Freddy Gray happened under Barack Obama and Eric Holder. So did the rapid, expensive militarization of American police. Obama called looters "thugs" too. Democratic mayors around the country today are smart enough not to say that, but their criticisms lean far more heavily on protesters than on police. The truth is they are terrified of their own police forces, and they are terrified of the most reliable voters – old white people – who adore law enforcement to an extent that is pathological.
No one, from Joe Biden to the Senate to the local mayor, is coming out and saying the obvious here: the problem is that American police are totally out of control, operating under their own rules and effectively independently of any meaningful control. The courts coddle them. Prosecutors coddle them. The public coddles them. Legislatures coddle them. Local politicans coddle them. Democrats are not The Good Guys here, and it is idiotic to expect voters to flock to Joe Biden, a lifelong proponent of tougher policing and tougher criminal justice, in response to these events. No one has been The Good Guys. That is the problem. The party that is supposed to care about police brutality has gone all-in on the kinds of Management tactics that look like action but accomplish nothing (town hall meetings, "community engagement", training, fake "oversight") and even now, that seems to be the extent of what they can offer.
This problem is too big and too serious to fix with some spackle and paint. Nothing is left but to defund law enforcement until they begin to rein in their excesses, to end practices like qualified immunity that let them act with impunity. If defunding them does not work, these departments must be disbanded and rebuilt from the ground up. It has been done. It can be done. What's totally absent is the will to do it.
If the best Joe Biden can do is tell people he wants to set up an oversight board and to train police to shoot people in the leg rather than in the heart, you cannot continue to be surprised that Democrats fail to get people to come out for them on election day. The thing about politics that they seem to have forgotten is that you don't get people to vote for you by screaming at them that they have to, especially when you have promised them things again and again that you have not delivered. You have to offer them something that is appealing to them and then actually deliver on the promise.
Forming a committee or "having a conversation" is what your boss does when he wants the employees to feel like problems are being addressed while nothing actually changes. Four decades is plenty of time for everyone to figure out that nothing that goes into the Suggestion Box or is said at Town Hall Meetings is actually taken seriously.
Democrats have exhausted the number of times they can tell people, vote for us now and we will deliver for you later. Deliver, and cynical non-voters will come back. And most of all, stop framing police violence as an issue where We are good and virtuous while the GOP is evil. The second half of that statement is true, but if you believe the first is then your mindset is part of the problem.