a couple of points I'd add:
active criminals whether low level or somebody like Kaba involved in very violent crimes will often not know why they're being stopped-ie which crime-hence they will be in a state of high alert/paranoia/fear of being locked up and will always be on their toes.
secondly, it is incredibly rare in this country for police to discharge a firearm-once or twice a year with tens of thousands of 'firearms incidents'dealt with.
my own force have never discharged a firearm.
firearms officers get no extra pay.