Video purportedly shows Bahraini protester shot in head point-blank by police

I have no way to verify this, but it's making the rounds, including Huff Post, so I'm posting this as is. If anyone knows more about this video, please weigh in in the comments. Thanks. The video is posted below the screen shots I grabbed.

He was already shot once by the police, and was just standing up again when he got shot a second time, apparently in the head. First pic he's standing up after being shot the first time, second pic you can see the cop in back aiming his gun seemingly at the man's head, third pic he fires in a puff of smoke. Looks like they might be rubber bullets, or they might have been buckshot that they were using on other protesters.