打黑 Traditional form: 打黑 Pinyin (reading): dǎhēi Definitions: to crack down on illegal activities; to fight organized crime Characters: 打 - to attack, to beat, to hit, to strike 黑 - black; dark; evil, sinister Traditional characters: 打 - to attack, to beat, to hit, to strike 黑 - black; dark; evil, sinister