Not pigs most times, just the New Americans that lived their whole lives before coming here never seeing a toilet or running water in a sink. Most of these people have no idea how to use an Out House much less how to prime a water pump.
Nah, it's not immigrants from countries without Western-style plumbing as such, but people who don't give a ... (or maybe they give several?) about things they don't own or get paid to maintain. What happens in retail, fast food, and gas station restrooms is a less sanitary version of what happens in the aisles of a a K-Mart or in a Walmart or Target (yes, that was a slam on K-Mart, whose employees in this area seem not to care about putting away the stuff with which "K-Mart shoppers" seem to carpet the store aisles). It's a disregard of property and people that does not really tie to any national origin or skin color.
If you travel to Asia, I hope you figure out how to use a "Squatty".
