The most common and most likely answer to this crossword clue is the 8 letter word AGITPROP
I've seen this crossword clue in The Guardian
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More clues leading to the result AGITPROP
- Left-wing material: it starts to parody Reagan
- A sucker for power’s brainwashing
- Misleading info put forward by a scoundrel
- Political activity — needs a good bit for power, with billions spent
- Article by twerp to support subversive literature
- Isn’t this Soviet spin pervading? Tag it properly
- Terrible prig at work attempts to influence the workers
- Political message from an unpleasant person needing support
- Russia often put this out: ‘Support an idiot as leader!’
- A dolt to sustain fake news from Moscow?
Buddy explains!

The straight part
We know that "political activity /political activity" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case political activity /political activity = agitprop.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does AGITPROP mean?
AGITPROP noun- Political propaganda disseminated through art, drama, literature, etc., especially communist propaganda; (specifically) such propaganda formerly disseminated by the Department for Agitation and Propaganda of the Central Committee of the Communist Party of the Soviet Union; also , an instance of such propaganda.
- An organization or person engaged in disseminating such propaganda.
- To disseminate (something as) political propaganda, especially communist propaganda, through art, drama, literature, etc.