It makes me angry

This morning while taking the dog for a walk I saw KFC wrappers, large paper cups, polystyrene chip cartons and other takeaway paper wrappers. These were obviously thrown from a car as it travelled out of town along the country road. On my way back home I collected them all up and placed them in a council rubbish bin that was situated only 500yds away.

Why oh why do people do it? Would they like me to throw rubbish into their garden?