Elianne Andam, a 15-year-old girl, was fatally stabbed by 18-year-old Hassan Sentamu outside the Whitgift shopping centre in Croydon while standing up for a friend. The incident occurred during a confrontation related to a personal dispute. Sentamu, who has pleaded guilty to manslaughter, is on trial for murder, claiming diminished responsibility due to his autism. Prosecutors argue that his actions were driven by anger and that bringing a knife to the scene had devastating consequences.