### Clue: Marxist activists operating in Sinic manner first of all? (6)
### Answer: MAOISM 
 ### Explanation: Definition: Marxist activists operating in Sinic manner
 **The 1st letters of, respectively,**( … first of all) "Marxist activists operating in Sinic manner ".
Answer: Marxism of the Sinic;Chinese sort. A WIWD (wordplay intertwined with definition) clue.