litterbug

noun

1. (informal)A person who tends to drop litter and not clean it up.

   “[…] I mean I'm sittin' here, on the Group W bench, 'cause you want to know if I'm moral enough to join the army, burn women, kids, houses and villages, after being a litterbug”

   “Pretending a litterbug and a spree killer have committed equivalent infractions doesn’t make people safer.”

   “Mr. Doherty was known to publicly berate litterbugs and upbraid motorists whose stranded cars prevented plows from clearing snow.”