Provocative article in Communist newspaper (3,3)
I believe the answer is:
red rag
'provocative article' is the definition.
The definition suggests a singular noun which matches the answer.
'communist newspaper' is the wordplay.
'communist' becomes 'red' (red can informally mean communist).
'newspaper' becomes 'rag' (informal term for a newspaper).
'red'+'rag'='RED RAG'
'in' is the link.
Can you help me to learn more?
(Other definitions for red rag that I've seen before include "Source of extreme provocation" , "Something proverbially annoying a bull" , "Bull incitor?" , "It is offensive to a bull" , "Proverbial bull enrager" .)