They had been working on infiltrating the police, corrupting it , whenever possible.
Since President Trump was elected, those bad elements were being weeded out, CLEANED.
They have always used the police (politicized them) with the plan being to go positive media coverage as they became more corrupt, or negative media coverage as they rooted out bad corrupt cops who really work for Cabal.
There are multiple reasons.
By dems being anti police, when arrests occur they can say the police were exacting revenge.
To delegitimize and tarnish their reputations.
to put in their own police, maybe involving the UN.
Which was the plan eventually( NWO world wide police force)