Is cart wrecked by a bigot? (6)
I believe the answer is:
racist
'a bigot?' is the definition.
(racist is a kind of bigot)
'is cart wrecked' is the wordplay.
'wrecked' is an anagram indicator.
'is'+'cart'='iscart'
'iscart' is an anagram of 'RACIST'.
'by' is the link.
(Other definitions for racist that I've seen before include "Bigot" , "One ethnically biased" , "Hostile towards people of other ethnic origins" , "proponent of B&W crime drama?" , "Person prejudiced against others for ethnic reasons" .)