Poetry included by socialist being backed up (8)
I believe the answer is:
reversed
'backed up' is the definition.
'reversed' can be an answer for 'backed' (I've seen this before). I am not certain of the 'up' bit.
'poetry included by socialist' is the wordplay.
'poetry' becomes 'verse' (synonyms).
'included by' indicates putting letters inside.
'socialist' becomes 'red' (socialism is often associated with the colour red).
'verse' going into 'red' is 'REVERSED'.
'being' acts as a link.
Can you help me to learn more?
(Other definitions for reversed that I've seen before include "Turned round" , "Turned inside out or upside down" , "Turned backwards" , "Put back to front" , "Drove car backwards" .)