Bigot (6)
I believe the answer is:
racist
'bigot' is the definition.
(I know that racist is a type of bigot)
This is all the clue.
(Other definitions for racist that I've seen before include "proponent of B&W crime drama?" , "One prejudiced against people of other nationalities" , "One ethnically biased" , "Person prejudiced against others for ethnic reasons" , "Hostile towards people of other ethnic origins" .)