Assa Traore, sister of Adama Traore, a 24-year-old Black Frenchman who died in a 2016 police operation, attends a gathering in front of a fresco in memory of Adama Traore and George Floyd, whose death in police custody has sparked unrest in the United States, with the slogan "against racism and police violence" painted on a wall by a group of artists "Collectif Art" in Stains, France, June 22, 2020. REUTERS/Benoit Tessier