Got the impression society needs changing (6)
I believe the answer is:
sensed
'got the impression' is the definition.
'society needs changing' is the wordplay.
'society' becomes 's' (common abbreviation in names of organisations).
'changing' indicates anagramming the letters.
'needs' anagrammed gives 'ensed'.
's'+'ensed'='SENSED'
(Other definitions for sensed that I've seen before include "Felt, tasted, etc" , "Became vaguely aware of (something)" , "'Felt, perceived (6)'" , "Felt, had mental impression" , "Became aware through mental perception or intuition" .)