Activity of those out to deter others? (9)
I believe the answer is:
picketing
If this is the answer I cannot explain how the clue works.
Can you help me to learn more?
(Another definition for picketing that I've seen is " That may keep strikers in line".)
I've seen this clue in The Guardian.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free.
Check out my app
or
learn more
about the Crossword Genius project.