Weaponizing Federal Law Enforcement

The Department of Justice announced that they have charged the four police officers who were involved with the death of George Floyd. They took this action even though Derek Chauvin had already been convicted in state court and the other three officers are awaiting trial. The officers are charged with violating Floyd’s civil rights under United States Code Section 1983. But the DOJ went further stretching 1983 to include the failure to provide medical aid to Floyd.
Double Jeopardy does not apply, even though the facts are the same, when separate cases are filed in both state and federal courts. This is the first time that the feds have taken this action while state cases are pending or have resulted in a conviction. It was also announced that the DOJ had agents stationed at the Hennepin County Courthouse to arrest Chauvin had the jury found him not guilty. Why this tactic has only been used in cases involving police officers and not been used in bank robbery, counterfeiting and other cases is puzzling to say the least.
The DOJ charged the four officers involved in the Rodney King case, but that was after a state jury acquitted them in a state trial.
The question which must be asked is what motivated the feds to take this action. One logical theory is that this is a conscious effort to appease the radical elements of the Democratic Party. Another theory is that this is a part of a concerted effort to demoralize local law enforcement forcing the retirement and resignation of officers en masse at which point a national police agency can be created, That agency would report directly to the Washington power base.
Use of active military is specifically prohibited on US soil, but National Guard troops are regularly deployed in civil unrest and they are controlled by Washington.
What is perfectly clear is that the DOJ intends to destroy the lives of the four former officers by bankrupting them. The cost of legal defense in two separate trials will run into the hundreds of thousands of dollars. That does not consider the mental stress of facing both federal and state prison sentences. Legal experts have stated that sentences would be concurrent if convictions in both courts is reached.