Police in Pasco, Washington, have come under fire after a cellphone video emerged of several officers pursuing, then shooting, an unarmed homeless man to death after he threw rocks at cars outside a supermarket. Antonio Zambrano-Montes, 35, was throwing the rocks when police encountered him. The video shows Montes being chased across a street by police, then collapsing to the ground after being shot. More than a dozen people witnessed the shooting, some of whom said officers fired as many as 13 shots. The Seattle Times reports that this is the fourth fatal police shooting in Pasco in the last six months.