You are correct, a lot of cops think they've got a license to kill. This weekend Toronto cops shot a guy with a knife, ten times! Two or three bullets aren't enough. He died.
More trash off the street.
As a cop, what would you have done when some little piece of shit pulled the knife on you?
No you don't try to console the guy
or
try to negotiate with them.
Kill the guy. Nothing wrong with that!