Sectarianism is a problem which runs deep in Scotland, affecting players and fans alike. In his new anti-sectarian book, "Singin I'm No a Billy He's a Tim", award-winning author Des Dillon explores what happens when a Celtic fan is locked up with a Rangers fan on the day of the Old Firm match, asking who to blame for bigotry (segregated schools, the clubs themselves), suggesting ways of tackling the problem and revealing an interesting solution along the way. It supports the Scottish Executive's One Scotland campaign challenging sectarianism and religious intolerance.