There's a tradition in British intellectual life of mocking any non-political force that gets involved in politics especially within the sphere of the arts and the theatre.
Whatever your supposed politics are – left right – if you put it in a human connection most people will rise to the occasion and feel the human pain in a way that they might not if it was presented in a more conceptual way.
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It's a good question because a movie isn't good or bad based on its politics. It's usually good or bad for other reasons though you might agree or disagree with its politics.