People who say this movie is one sided i think are wrong. Granted the british look worse. Well they gunned down unarmed people in the street. Duh? I think the filmmakers went out of there way to say that irish 'hooligans' played a role it setting it off by not following the march route and by throwing stones.
The british were so wrong that some people will think it's propaganda anytime the irish tell there story. Our in this case when a british director tells their story.