Criticise US lawyer for image of WWF (5)
I believe the answer is:
panda
'image of wwf' is the definition.
(the Worldwide Wildlife Fund's logo is a panda)
'criticise us lawyer' is the wordplay.
'criticise' becomes 'pan' (informal term meaning to criticise heavily).
'us lawyer' becomes 'DA' (abbreviation for District Attorney).
'pan'+'da'='PANDA'
'for' is the link.
(Other definitions for panda that I've seen before include "Chinese native" , "Chinese animal" , "Black and white Chinese bear" , "Bamboo-eating animal" , "Bamboo-eating creature" .)