A group involved in patriotic activities (4)

I believe the answer is:

trio

'a group' is the definition.
The answer is an example.

'involved in patriotic activities' is the wordplay.
'involved in' indicates the answer is hidden within the clue.
'TRIO' can be found hidden inside 'patriotic activities'.

(Other definitions for trio that I've seen before include "Threesome" , "Beethoven's 'Archduke', for instance" , "Bee Gees, Supremes or Andrews Sisters, say" , "Small group playing" , "Three together" .)

I've seen this clue in The Globe and Mail.

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