I think to compare the regular gropings of US screeners with the very, very few cases of intoxicated pilots (who invariably seem to get detected) is quite inappropriate.

Being a screener must be a great job for those who get a kick out of groping and who have that particular sexual orientation, especially as they can pretend it is for security, which is the current excuse for behaving as you like and getting away with it. Presumably many are of this sexual orientation and will thus cover up for each other. Bet they have some laughs as they watch those TV pictures afterwards over a beer.