The Reds storm up -- Man City in trouble (9,5)
I believe the answer is:
communist party
'the reds storm up man city in trouble' is the definition.
I can't judge whether this defines the answer.
'storm up man city in trouble' is the wordplay.
'in trouble' indicates an anagram.
'storm'+'up'+'man'+'city'='stormupmancity'
'stormupmancity' is an anagram of 'COMMUNIST PARTY'.
Can you help me to learn more?
(Other definitions for communist party that I've seen before include "Former Soviet Union rulers" , "Marxist organisation" .)