Hong Kong’s police chief has thrown his weight behind a controversial government reform of the appraisal system that will deny a pay rise to the bottom 5 per cent of performers, despite concerns raised by frontline officers. Commissioner of Police Joe Chow Yat-ming said on Saturday that management would step up efforts to explain the new policy to staff through various internal channels. “As the head of the department, I support the reform,” Chow said. “I believe our colleagues will agree that..