This is the moment a gang of evil thugs laughed together as they re-enacted a murder after brutally killing a devoted dad in a park. br br Michael Obasi was out for his usual evening walk when he was attacked and beaten by a group of three men and three teenage boys on March 14 last year.br br The 38-year-old was later reported missing by his family and his body was found by a dog walker two days later in Perry Hall Park, Birmingham. br br A post mortem found Michael died from multiple injuries following the "senseless and violent" attack.