It's obvious why he takes a particular interest in children caught up in violence:
https://en.wikipedia.org/wiki/Andy_Murray
Murray grew up in Dunblane and attended Dunblane Primary School. He and his brother were present during the 1996 Dunblane school massacre, when Thomas Hamilton killed 16 children and a teacher before shooting himself; Murray took cover in a classroom. Murray says he was too young to understand what was happening and is reluctant to talk about it in interviews, but in his autobiography Hitting Back he states that he attended a youth group run by Hamilton and his mother gave Hamilton lifts in her car.