It's the middle of the night in a parking lot and a group of thugs point guns at you. What would you do?
Anyway you slice it this was shoddy, criminally negligent police work - at best.
Well they were shoddy, unprofessional drug dealers so the score is even. You sell a drug that kills people and in turn your daughter gets killed. The karmic scales get balanced once again. The wheel of the grist mill grinds exceedingly fine!