Hong Kong singer Hins Cheung’s new role as a mentor and volunteer for the Security Bureau’s youth rehabilitation programme has sent shock waves through his fan base.For years, the Guangzhou-born singer was celebrated not just for his vocal prowess but also for his perceived alignment with the city’s grass-roots sentiments during social movements.The South China Morning Post unpacks how the controversy exploded overnight.1. Who is Hins Cheung?Born in 1981 in Guangzhou, Cheung moved to Hong...