See bold.
There's absolutely cases where cops need to be on alert. You pull over a vehicle with Secret Service tints playing loud music with the aroma of marijuana seeping from the cabin, by all means, definitely profile and be on alert. But when you pull over someone with a "baby on board" sticker and a car seat in the back of a Toyota Camry, why are you approaching with your hand on your gun and being forceful to exit the vehicle? True story BTW.
Every institution is a microcosm of society, there are good and bad people EVERYWHERE, there's no reason to believe that the police force is any different. However, they hold more power than most organizations and too many of them use it forcefully and unnecessarily. One of my long time friends is a police officer (God complex) and so is my uncle; right there one out of two is a walking problem on the street.
I'll say there's bad people everywhere, good I don't know about, I know every situation is different but when you see a kid or even a baby in the car you can't assume that the adults in the car are not doing anything wrong. I've seen cars with kids in it that are full of drugs and guns. I agree the cops need to be careful when kids are in the car but kids in the car are not a guarantee that Everything is ok.