Public vs. Private
Since when did public garbage cans become "private" garbage cans? Most of the junk sitting next to the cans in question appear to be from homes and private citizens.
I don't think the trashcans are the problem, it sounds like the people living around the trashcans might be the issue. Maybe you should hold a neighborhood meeting discussing how folks dispose of their trash.
“Nobody can go back and start a new beginning, but anyone can start today and make a new ending.” - Maria Robinson