direct to your inboxGreater Manchester Mayor Andy Burnham has described harrowing body cam footage of an 'unlawfully killed' father begging to be freed as he was restrained by Metrolink-contracted staff as "one of the most distressing things you could see."He expressed sympathy to the friends and family of Jack Barnes, 29, who was pinned down outside Australasia restaurant on Deansgate in Manchester city centre.The dad-of-one had been involved in an altercation with staff at Victoria Station,