Put a few of ‘em in prison for this kind of assault and battery under color of law, in general population, and this criminal behavior will end.
People need to realize that having the police be not just citizens who arrest and investigate but judges and punishers with no restraints is a bad road for any country to go down.
The way some police refer to non-police as "civilians" is a bad sign.
Because if the police are not civilians then what are they?