15-year-old Matisse tragically met his end when an Afghan migrant, previously arrested for violent crimes, fatally stabbed him in the heart, while his own mother joined in, mercilessly slapping the defenseless victim as he lay dying on the pavement. In a case that has sent shockwaves across France and reignited the contentious immigration debate, the gruesome murder of 15-year-old Matisse, who was stabbed to death by an Afghan migrant in Châteauroux with the help of his mother, has taken a chilling turn with the emergence of disturbing new details. The alleged perpetrator, a teenage Afghan migrant with a history of...