It took years to get most people to quit throwing their trash out of the car window. When my son was in 4H for archery most of the people were from rural areas and into bowhunting. I remember complaints about rifle hunting season as all of sudden there was 7-11 and McDonalds trash all over the roads, so it's still a problem.
One can't go anywhere on earth without evidence of man having taken a dump in his bed; chemical residues in arctic animals, ozone holes in the Antartcic, populations of animals crashing all over the world, tons of trash on top of Everest.......