Maybe it's because I live in a country where the police don't carry guns (and sex work is legal), but I found it really hard to put my finger on exactly what they are advocating for here.
They seem to be saying that police only exist to enforce middle class interests? I don't think that's entirely true.
I would like to see more change in how policing is done, but the idea that communities self-police is idealistic. Sure they do in some ways, but it can be just as selective and just as damaging as anything police do.