Relatives, friends and mourners of 13-year-old Lindsay, who committed suicide following school harassment, walk in silence during a commemorative march in Vendin-le-Vieil, northern France. Victim of bullying at school, Lindsay killed herself on May 12. Her mother and stepfather announced that they had filed a complaint, in particular against the high school and certain social networks. "We are launching a fight against these social networking giants who amplify violence, make it permanent and dumb down our children," says Lindsay's mother during the "white march." IMAGES AND SOUNDBITES