UK

Collateral Damage: I have seen two movies so far dealing with ths issue

1.- Collateral Damage: Arnold Schwarzeneger (2002)
(they kill his family and he gets a payback)

2.- Collateral: Tom Cruise, Jamie Fox (2004)
(a "for hire killer" trying to do his job
and Jamie comes to be the taxi driver for
this "hitman" for one whole night)