A Dry White Season (1989)

A Dry White Season (1989) 

http://www.imdb.com/title/tt0097243/?ref_=fn_al_tt_1

Ben du Toit is a schoolteacher who always has considered himself a man of caring and justice, at least on the individual level. When his gardener's son is brutally beaten up by the police at a demonstration by black school children, he gradually begins to realize his own society is built on a pillar of injustice and exploitation.

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