Newspaper’s revolutionary work plugged by Times leader (3-3)
I believe the answer is:
red-top
'newspaper's' is the definition.
(I've seen this before)
'revolutionary work plugged by times leader' is the wordplay.
'revolutionary' becomes 'red' (red can informally mean communist).
'work' becomes 'op' (common abbreviation for 'opus').
'plugged by' is an insertion indicator (plug can mean to block up a gap).
'times leader' becomes 'T' (first letter of 'Times').
'red'+'op'='redop'
'redop' placed around 't' is 'RED-TOP'.
(Another definition for red-top that I've seen is " Tabloid newspaper".)