[cptskippy]

That could also be a cultural thing. Some cultures, like German and Japanese, have stricter etiquette and manners around things like cleanliness and order. In my experience Germans are also not shy in telling you when you've violated etiquette either, which is very different from in the US where people avoid confrontation.

[novok]

The reason why in the US is because you have a very real chance of getting shanked or violently attacked if you do 'notify a violator' in public.

[cptskippy]

That's not true.