This would seem cut and dried to me:
Here is my best distillation (based on detailed findings made by the district judge after a five-day bench trial):
In October 2010, officers were searching for a “parolee-at-large” who allegedly had been spotted bicycling in front of a suspected drug-trafficking house in suburban Los Angeles. Officers, who had no warrant to search or arrest, went to the house, announced themselves to the owner, and gained entry by threatening to force their way in. (The parolee was not there.)
Meanwhile, officers Christopher Conley and Jennifer Pederson went to “clear the backyard.” After entering the yard and checking some small metal storage boxes, the two officers came to a dilapidated wooden “shack” that (as the district court found) they could not “reasonably” have believed to be unoccupied. The shack had various signs of occupancy, and a lead officer testified that he had advised the deputies that a man named Angel lived in a shed in the yard with his pregnant girlfriend. (The district judge found that both deputies had heard this advisement, and that if they had not then they had “unreasonably failed to pay attention.”) With his gun drawn, Conley pulled open the door of the shack.
The Mendezes were resting on a futon; Angel kept a BB gun next to his bed to shoot pests. When he heard the deputies’ entry, he picked up the BB gun to move it so he could get up. (Whether the gun was “pointed at” the deputies remains disputed, but the trial judge found Mendez was moving it innocently, merely “to help him sit up.”) Conley shouted “gun,” and the deputies fired 15 bullets at the two occupants. Mendez, severely injured, exclaimed, “I didn’t know it was you guys. It was a BB gun….”
No criminal case was filed against the officers, but the courts did award the Mendezes $4 million in damages in a civil suit. The case is now at the Supreme Court to review that award. I wonder what would have happened if Angel had had a real gun and killed one of the officers?