Ringleaders bother manufacturers (13)

I believe the answer is:

troublemakers

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

'bother manufacturers' is the wordplay.
'bother' becomes 'trouble' (synonyms).
'manufacturers' becomes 'makers' ('maker' can be a synonym of 'manufacturer').
'trouble'+'makers'='TROUBLEMAKERS'

Can you help me to learn more?

I've seen this clue in The Daily Express.

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