Tear gas, and plastic pellet gunshot used by Venezuela's National Police against a protest in Altamira, Caracas. The image shows distressed students who were peacefully in front of police line at the time of the action. The situation calmed when the majority of protesters managed to convince those throwing rocks to stop. This allowed the peaceful protesters to approach the police. Suddenly a rock thrown from behind the group near the police hit the riot shields and the pictured police action ensued.