A movie isn't a political movement, a party or even an article. It's just a film. At best it can add its voice to public outrage.
Ken LoachHistory is contemporary. Your understanding of history confirms what you think of the present. It's not neutral. I would be very surprised if people with a different view of the present, don't take issue with my view of the past. I just hope that people deal with the content of the film.
Ken Loach