I bet all babies and toddlers would disappear.
But yeah, beyond that, I doubt there's an adult out there who doesn't break several of the 7 deadly sins many times a week: in present day society Greed and Envy are probably broken pretty much all the time, Wrath is probably a very common one for "conservatives" to break, and then there's Lust which is naturally common, Glutony which is certainly widespread given the overweight "epidemics" in most countries and Sloth is likely very common in car-centric societies - I mean, somebody taking their car to go 500m to a store to buy a pack of beers and some chips is probably guilty of both Glutony and Sloth.
That said, all the babies and toddlers and only them suddenly disappearing all at once would give it away.