The Weekend Australian carried a thoughtful and provocative column Sports pick a sin, any sin .. give themselves a free run at all the others, by Simon Barnes and originally published in the Times (London) under a different title.
He points out how sports (and implicitly society at large) don't want to deal with moral complexity: the "moral maze" is replaced with a "moral motorway" where there is just one deadly sin. Everything else is fine. But if your opponents commit the one sin [racist language in football, doping in cycling] then you have the right to destroy them.
An earlier post considered another column by Barnes with a similar theme.