A police officer in Oakland, California, shot and killed a guy

A police officer in Oakland, California, shot and killed a guy who was lying on the ground and seemed to be cooperating. Several people caught the incident on their cell phones. Here's the best angle.

(--Note: You'll have to sign into YouTube to view this video. It's a little hard to see what's happening, but you can clearly hear the gunshot at :07.)

(--WARNING: A man was killed by this gunshot, which you may find disturbing . . .)