If they unlawfully put themselves in a situation where they felt compelled to return fire then they should be held accountable for whatever damage their bullets do just like any other person would be.

If my convenience store stickup goes sideways and the clerk gets shot I'm responsible. Cops should be held to the same standards as normal people.

We should also get rid of no-knocks but that's just whacking a particular mole. The root cause of the problems America has been having with police is that normal people do not get the same treatment under the law that police do.