### Clue: Red 6 held back in trade centre as 9 is in catalogue (7-8)
### Answer: MARXIST-LENINIST 
 ### Explanation: Definition: Red
 **Reversal of**(… held back) SIX(6) **contained in**(in) MART(trade centre/market) + **reversal of**(as … is/is held back like 6 in the first half of the clue) NINE(9) **contained in**(in) LIST(a catalogue/a register of items).
Defn: …/Communist embracing Marxism-Leninism.