Dan etc developed alarmist traits (7,7)

I believe the answer is:

martial artists

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'dan etc' is the definition.
I can't judge whether this definition defines the answer.

'developed alarmist traits' is the wordplay.
'developed' indicates anagramming the letters.
'alarmist'+'traits'='alarmisttraits'
'alarmisttraits' is an anagram of 'MARTIAL ARTISTS'.

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I've seen this clue in The Independent.

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