POTUS announces a federal speedy investigation into the murder.
Locals immediately arrest the cop and charge him with 3rd degree murder.
They do not want feds charging and investing him.
The locals Democrats can rig the jury and stage a shit show trial.
The jury will deliberate for weeks getting full media coverage.
This will happen in October so that when he is found NOT GUILTY, cities across the country burn.
The November election will be a shit show of pissed of sheep, rioting and blaming racist crackers for more injustice.