People hold banners reading "No more police brutality" as they gather in the city of Nice on March 25, 2019, in support of Genevieve Legay, an Attac activist who collapsed on the ground in during a demonstration by the anti-government "Yellow Vests" (Gilets jaunes) movement in Nice, southeastern France on March 23. - Prosecutors in Nice opened an inquiry to try to establish what happened on March 23, 2019 when 73-year-old Genevieve Legay suffered head injuries. (Photo by Valery HACHE / AFP)