On this one I'm not going to dispute Obama or Clinton yet. The ambassador looks alive in the first photo and he's not being dragged through the streets. If someone has better information I'll be glad to look at it.
No not dragged (bad headline). But he is being yanked by the arm by some guy out of camera range. That guy was obviously not trying to help (unlike the guy with the phone in his mouth).
He is not dead. You can tell by his coloring. Some people may have been trying to get him to the hospital.
There is CIA at the embassy, US supporters who knows who was in the mob?