Claimed elite snobs must be beaten up (10)
I believe the answer is:
ostensible
'claimed' is the definition.
(thesaurus)
'elite snobs must be beaten up' is the wordplay.
'must be beaten up' indicates an anagram.
'elite'+'snobs'='elitesnobs'
'elitesnobs' anagrammed gives 'OSTENSIBLE'.
(Other definitions for ostensible that I've seen before include "Seeming" , "Apparently true" , "Professed" , "Apparent" , "Manifest" .)