Tristan Anderson still 'critical'
B'Tselem: Tear gas canisters as weapons
On 13 March, a Border Police officer fired an extended-range type tear-gas canister that struck Tristan Anderson, an American citizen, during a demonstration in Ni’lin. B'Tselem’s investigation reveals that the police officer fired the canister directly at Anderson from 60 meters away, even though Anderson had not thrown stones and had not endangered the police officers. The grenade struck him in the forehead, fracturing his skull and injuring the front lobe of his brain. It is still too early to determine the extent of the damage.
Particularly instructive are the two B'Tselem video segments. These cannot be embedded, so you need to take a close look, here.