Several years ago, Scottish officials sought to cool tensions between Celtic and Rangers fans during Glasgow’s highly-charged Old Firm derby by banning perceived symbols of sectarian identity. Celtic supporters, the city’s Catholic club, were ordered not to fly the Irish tricolour while Rangers, the Protestant team, were told not to display the Union Flag. Security managed to prevent such paraphernalia from entering the stadium, but fans found an ingenious way of circumventing the restrictions to proudly parade their political and religious affiliations. As kick-off commenced, the Rangers’ sta…