These ladies are playing peek-a-boo with their fellow Americans. They can see us, but we can't see them. Guess where these photographs were taken?
I realize that these women were unhappy that I took their photo, but if you dress like a bandit, don't be surprised that average Americans find that odd and worthy of a photo. They no doubt consider me rude to take their photo, but I consider it rude to cover one's face in public. So I guess we're even.
In the U.S. and in all Western countries, we don't cover our faces. That's true for most cultures in the world.