Because you're supposed to loose big gunfights against the PD, they're that force that are supposed to wipe you the fuck out, if cops come and raid you what you should do is get mates to flank them, and as you're killing the PD both from behind and inside the apartment complex or where ever you are, is make a run for it, pick your drugs, get in a car, run the fuck out of the area because they will get more backup then you will be able to hold.
I've compiled a list of reasons why you should run from the Police if you're in a raid
* They have armour
* They have more people working for them
* They are not some chimps who bought some AK from Bazaar and they also don't have a buddy called Mike that they call who will bring "his boys" to help you, they will call professionally trained people to raids
* They have unlimited ammunition
There are 4 reasons why you should run, don't be a looser and sit still in a raid cus you're the one who looses out on it.