In Hong Kong in the 1960s and 1970s the police were corrupt. Hongkongers had no confidence at all in the police. It's no wonder some people said cops were gangsters with a license.
香港六十、七十年代嘅警察貪污腐敗，港人對警察冇乜信心，唔怪得有啲人話差佬係有牌爛仔㗎。