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CCTV footage has been released of the deadly coward punch that saw a 19-year-old killed as his family label the killer a 'coward.'
The video shows Andrew William Lee, 34, striking Patrick Cronin's temple despite the teenager only joining the pub brawl to pull his friend away.
Mr Cronin's parents Matt and Robyn have since opened up about their mission to make one-punch attacks 'socially unacceptable.'