Life for the killer who gloated over murdering this teenager in a rap

A teenage gangster who was recorded by police as he rapped about how lucky he was not to caught on CCTV murdering a schoolboy at a train station has been jailed for life. Kion McKenna, 17, stabbed Louis Johnson, 16, with a ferocious 15cm ‘Zombie knife’ in front of horrified commuters at East Croydon station. He was warned by police that any phone calls he made in custody could be recorded. But he could not resist telling a friend over…