Tristan Anderson was struck in the head by a high velocity tear-gas projectile shot directly at him by Israeli Border Police officers during a demonstration in the village of Ni'ilin on March 13th, 2009. Anderson was critically injured and suffered irreversable brain damage.

The police opened an investigation into his shooting, but decided to close the case with out filing an indictment.The decision to close the case was taken by the Israeli Advocate General despite the fact that the investigating team had not even bothered to visit the scene of the shooting.