So if the cops have a valid search warrant, and they come at a time you do not approve of, you can shoot them, right?
No, just the wannabe gangsta raids, where you can’t tell the difference. Why should the onus be on the cops employers to take the chance? If they knock, and have what appears to be a warrant, and are willing to wait while you check out the warrant as long as they can insure you aren’t destroying any evidence, then shooting them would be excessive.
I guess if I had to boil down my rule it’s this: The police can’t treat what could have been a rational transaction into a violent encounter, then still have the right to legally punish someone for fighting back with violence, especially when that person is on their own property, and especially if it’s one of the cases where the homeowner turns out to be a complete innocent. (If you’re an innocent, you don’t assume it’s the cops breaking down your door but bad guys of one flavor or another. They shouldn’t be punished for that presumption.)