content: In the city of Lausanne in Switzerland, a policeman was violently attacked, apparently without reason, while on patrol near the square Riponne. Accompanied by a colleague who is grappling with an accomplice of the attacker, the police officer suffered a series of punches as he is on the ground. Faced with this amazing act, many passersby quickly intervene to help the police. Soon after, reinforcements arrived to secure the area and handcuffing the assailant. Unfortunately, in the chaos of the situation, the accomplice of the attacker managed to escape.  This time of the incident Lausanne Carnival festival, which took place between 7 and 10 May 2015. Following the release of this video, comments are raining down on social networks, causing widespread indignation. During 2015, no fewer than 108 city police have reported cases of violence or threats as part of their function.