USA passes 300,000,000 population. Don't litter.

More people, more need to curtail things like littering.

I was never a litterbug, but the first sign I saw that said, "thousand
dollar fine for littering" impressed me. It was on my 1988 bike trip to southern California. Somewhere around San Simeon.

"Wow, thousand dollar fine for tossing a candy wrapper."

Now, these signs are common place; even here in Washington State.