When there is an illusion of purity, the situation is ripe for corruption, as the illusion of purity inhibits investigation. The illusion not only hides corruption, but makes it possible.
Yesterday, I happened onto the Science Channel program Freakonomics, which I had never seen an episode of before. During it, there was a segment on corruption within sumo wrestling in Japan. The two sentences (or something extremely close to it) were said a number of minutes apart in the segment. If that sounds somewhat bizarre, sumo wrestling, besides being a sporting event, has large portions of Shinto ritual within it, according to that report.