Denunciation of help returned by family (8)

I believe the answer is:

diatribe

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'denunciation' is the definition.
(I know that diatribe is a type of denunciation)

'help returned by family' is the wordplay.
'help' becomes 'aid' (synonyms).
'returned' shows that the letters should be reversed in order.
'by family' becomes 'tribe' (I've seen this in another clue. I am not sure about the 'by' bit.).
'aid' back-to-front is 'dia'.
'dia'+'tribe'='DIATRIBE'

'of' is the link.

Can you help me to learn more?

(Other definitions for diatribe that I've seen before include "Torrent of abuse" , "Stream of invective" , "Long speech" , "Loud verbal attack" , "Vitriolic speech" .)

I've seen this clue in The Irish Independent.

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