If a Wii controller that looked ANYTHING LIKE a gun had been found, I guarantee they would be displaying it on every media outlet in the community.
The cop needs to go to jail, at the least for negligent homicide. Whoever trained her needs to be fired. I'm thinking that cops are currently being trained to fire if anything even vaguely LOOKS threatening.
'The officer felt endangered' doesn't wash here, unless you accept that an officer can otherwise control the situation from start to finish, including inviting themselves over to your place.