Like all good statists, Politicians are looking for ways to get more power. These attacks on the locally funded police are a way to get the federal government more involved with local policing. Look at the federal policing agencies; they have all been politicized. Look at the FBI’s role in getting rid of Trump and protecting Hillary, to name one recent example; there are too many to list here.
Now they are trying to delegitimize the local police by criticizing their methods. If you look at the recent history if dictators, local policing always becomes one of their tools for oppression. Local police will not follow orders to confiscate guns except in blue states. Forced masking, forced vaccinations, FEMA Camps, the list goes on. Look no further than what has happened to local public schools when the federal department of education was established. Now we have politicized schools.
Beware of federal powers consolidation of power; it is never in your best interest. They create a problem and pretend to have the answer and the answer is always more government.