If an organization has bad morale then it needs to change. It doesn't matter if the bad morale had some initial justification -- bad morale tends to be self-reinforcing. Even if the public now said very nice things about the police, it is unlikely that would improve the morale of the police. It's a bit like trying to pull a friend out of depression by saying nice things about them -- it doesn't work. A prolonged episode of bad morale also indicts the leadership -- such episodes are impossible without some official support. In the USA the model for turning things around is what the USA military managed to do in the ate 1970s, after the defeat in Vietnam. New leadership needs to be promoted, and the old leadership needs to be forced out. Then the rank-and-file must be given the choice, they can get their head in the game, or they can leave. That spirit of feeling sorry for oneself needs to are broken, and it can only be broken when top leadership is committed to breaking it. And at this point, police forces in the USA generally need the same kind of reforms that the USA military needed in the late 1970s. In particular, it was generally understood that the officer corp had been openly racist during the years of the Vietnam War, and after 1975 there was a growing commitment to transform the military into one of the most anti-racist organizations in the USA. This was achieved by the late 1980s, when the military transformed into an organization that then became the model for other Federal organizations that wanted to transform their internal cultures. That movement reached its apex General Colin Powell became the Chairman of the Joint Chiefs of Staff in 1989 -- a moment which symbolized how much the military had transformed its culture. And now the USA police will need to under go the same transformation. To the extent that the police currently feel sorry for themselves, the current mood is entirely unsustainable.