Lost to other terrorists and troublemakers (8)

I believe the answer is:

stirrers

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'troublemakers' is the definition.
The definition and answer can be both people as well as being plural nouns.
Maybe you can see an association between them that I can't see?

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Another definition for stirrers that I've seen is " Agitators".)

I've seen this clue in the Sydney Morning Herald.

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