Gang perhaps developing cult with no violence (10,4)

I believe the answer is:

collective noun

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'gang perhaps' is the definition.
The definition suggests a singular noun which matches the answer.

'developing cult with no violence' is the wordplay.
'developing' indicates anagramming the letters.
'with' is a charade indicator (letters next to each other).
'no'+'violence'='noviolence'
'cult' after 'noviolence' is 'noviolencecult'.
'noviolencecult' is an anagram of 'COLLECTIVE NOUN'.

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(Other definitions for collective noun that I've seen before include "exaltation for one" , "assembly, for example" .)

I've seen this clue in The Independent.

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