God's Law
Under the Law of God, killing an innocent person intentionally (which would include direct attack on a home using weapons for murder) is always punished by death (Exo. 21:12-14). There is no special case for government uniformed thugs with badges, and there is no special privilege for anyone to be allowed to kill innocent people for whatever reason. There’s also no provision in the Law of God for standing army or police with special privileges higher than those of law-abiding citizens. Under the Law of God, all these cops would have been executed as accomplices in a brutal, cold-blooded murder of a child.
Man's Law
Under the laws of men, they won’t be tried in court, and most probably won’t even be fired or made to pay indemnity to the parents. They will be allowed to continue roaming the streets and brutalizing, torturing, and killing innocent people, all in the name of the “safety” of those innocent people.