The people who leave their water should really start turning it off. Or you can be a doosh and NOT do something that benefits the whole planet simply to make some sort of strange political statement. And this isn't about politics. Reminds me of a The Simpsons gag: "coming up next, the latest fad sweeping the nation: wasting food." And they show a guy standing there dumping a whole cooked chicken into the trash. Why? "Because I can and you can't stop me!"
It's weird, I've met people who make it a point to do stuff like leave water on and litter, like throw bags of fast food out the window of a moving car, for some strange reason. Of course, they'll have you believe they act this way because they're too smart to fall for the social brain-washing, but they're really choosing some stupid ways to show what an iconoclast they are.