Covered by socialist, revolutionary story told (7)
I believe the answer is:
related
'told' is the definition.
(as in relating a story)
'covered by socialist revolutionary story' is the wordplay.
'covered by' means one lot of letters goes inside another.
'socialist' becomes 'red' (red can informally mean a socialist).
'revolutionary' is a reversal indicator (letters revolve around).
'story' becomes 'tale' (synonyms).
'tale' backwards is 'elat'.
'red' going around 'elat' is 'RELATED'.
(Other definitions for related that I've seen before include "Treadle (anag) - akin" , "similar" , "Having common descent or origin" , "Connected, by kinship say" , "Kin; connected" .)