These sonsabitches need to be investigated and somebody needs to be punished with extreme prejudice for this nonsense. It is becoming far too commonplace. Each time this happens, somebody needs to go to prison or be executed. There are NO excuses.
There's another aspect to consider in parallel with the first.
Drug buyers and users have little or no regard for the laws the rest of us obey. They invite the circumstances and results that innocents then suffer.
The cops are idiots if they can't tell which location they need to invade. The dealers and buyers deserve every bit of disregard that can be sent their way.