唱红打黑

唱紅打黑
chànghóngdǎhēi
  1. (Mainland China, politics) to uphold communism (literally, “sing red songs”) and defeat the gangs (a campaign of Bo Xilai 1949–)
  2. to uphold communism (literally, “sing red songs”) and defeat the gangs (a campaign of Bo Xilai 1949–)

Wiktionary

Entry Composition

1 唱 chàng
  1. to sing
  2. to call loudly
  3. to chant
=2 红 Hóng surname Hong
=2 红 gōng used in 女红 nu:gōng
=2 红 hóng
  1. red
  2. popular
  3. revolutionary
  4. bonus
3 打黑 dǎhēi to crack down on illegal activities; to fight organized crime