He would be ACTING in a righteous manner.
But he could just as easily be using the same force in a way that isn’t. Just look up the many many times cops have shot unarmed people.
The fact is that the police are force. The are the iron fist of government. Now that iron fist might, or might not, be wrapped in the velvet glove of righteousness. But they’re still an iron fist.
Never revere the iron fist.
It’s always good to revere righteousness.
It’s never good to revere unrighteousness.