Exclusive: Rasheed Rahman murdered ‘kind and generous’ grandfather Mark Carroll, 55, in an unprovoked stabbing in north London – the victim’s family are now demanding answers over the tragedy, as Holly Bancroft reports For free real time breaking news alerts sent straight to your inbox sign up to our breaking news emails Sign up to our free breaking news emails Sign up to our free breaking news emails Email * SIGN UP I would like to be emailed about offers, events and updates from The