Showing up people’s skin, as reflected in apartheid, unfortunately (5)
I believe the answer is:
nudie
'showing up people's skin' is the definition.
(informal term for nude)
'reflected in apartheid unfortunately' is the wordplay.
'reflected' says the letters should be written in reverse.
'in' indicates a hidden word.
'eidun' is hidden in the letters of 'apartheid unfortunately'.
'eidun' reversed gives 'NUDIE'.
'as' is the link.
(Other definitions for nudie that I've seen before include "One's uncovered" , "with strippers?" .)