Two teenagers have been jailed for murder after a "kind" father was stabbed in the heart during an unprovoked racist attack. Marcus Staniforth, 17, and a 16-year-old boy, who cannot be named for legal reasons, approached Kamran Aman, 38, after he delivered groceries to his mother's home in Barry, South Wales . The pair, of Llantwit Major, kicked and punched Mr Aman, with the younger boy hurling racist abuse during and after the attack. Staniforth brought a kitchen knife from a nearby property