Articles on sectarianism

http://www.heraldscotland.com/news/home-news/seeking-the-truth-about-sectarianism-in-scotland.19832147

http://www.guardian.co.uk/commentisfree/belief/2011/apr/24/scotland-sectarianism-research-data

http://www.independent.co.uk/voices/editorials/leading-article-sectarian-shame-of-a-national-game-2270506.html

http://www.guardian.co.uk/commentisfree/2011/mar/20/celtic-rangers-football-religion-sectarian