Officer's cycle stand from the 1920s (7,6)
I believe the answer is:
general strike
'stand from the 1920s' is the definition.
I can't tell whether this definition defines the answer.
'officer's cycle' is the wordplay.
'officer's' becomes 'general's' (general is a kind of officer).
'cycle' becomes 'trike' (trike is a kind of cycle).
'generals'+'trike'='GENERAL STRIKE'
Can you help me to learn more?
(Other definitions for general strike that I've seen before include "nationwide walkout" , "Widespread industrial action" , "Everything stops for it" , "Everybody out!" , "all-out effort" .)