French anti-drug activist Amine Kessaci Wednesday vowed to continue denouncing the scourge of narcotics crime, even after his younger brother was killed in the southern city of Marseille. Kessaci, 22, is a well-known campaigner in the port city struggling with drug crime, and last week's killing has been seen as a warning over his activism, which he threw himself into after his half-brother was murdered in a drug-trafficking feud in 2020.