Stop your momentum? get him down? FIRST you need to confirm he IS a criminal, not an innocent bystander...it’s a little too late after permanent injuries are inflicted to find out he is NOT a criminal and IS innocent. That is why you should always maintain self-control when dealing with the public as a police officer. Always.
Dude was IDed by women as person in a fight. Policeman tries to question dude. Dude makes a break and 2 1/2 blocks later cop catches up to dude. Dude slows down, turns to face cop and reaches into his pocket. Not exactly an 'innocent bystander'.