The half-time shenanigans at the Super Bowl are as legendary as the American tradition of taking offence to the things that seem kind of tame.
This is the country that - to paraphrase Kurtz from Heart of Darkness via Apocalypse Now - "trains young men to drop fire on people" but has an almighty tanty if someone gives a little stink finger.
Madonna's gob-smackingly opulent production was, some say, upstaged by MIA and her digit and some outrage has been reported - or possibly drummed up.
There has been audible tut-tutting at the very least and given that there's still an outstanding fine of about half a million bucks in regards to nipple-gate this is something that has to be taken seriously.
Let's not forget that it's not uncommon for American networks to blur out a finger gesture of an angry basketball coach after a brawl. Blow someone's head off with 45, smack a guy senseless with a hockey stick, or fill the entire schedule with child-killing serial killers by all means, but woe-betide if someone slips a nipple or moves a finger in an inappropriate manner.