Object about wrong-doers being supported (8)
I believe the answer is:
endorsed
'being supported' is the definition.
('endorsed' can be similar in meaning to 'supported')
'object about wrong-doers' is the wordplay.
'object' becomes 'end' (I've seen this in other clues**).
'about' is an insertion indicator.
'wrong' indicates an anagram.
'doers' anagrammed gives 'dorse'.
'end' going around 'dorse' is 'ENDORSED'.
(Other definitions for endorsed that I've seen before include "Officially approved" , "Certified or supported" , "Publicly declared support (for something)" , "Wrote one's signature on the back" , "Gave approval to" .)