People do litter, and they aren't many community driven initiatives to clean up, but I don't think litterers are the source of the garbage problem.
Many municipalities in Rome dispose of garbage through large bins placed on the street at the bottom of apartment buildings. Especially during the winter, these bins are not regularly emptied, causing piles of waste around them and litter being carried around by the wind.
The same happens with parks' garbage bins, with the added challenge that you probably can't pick up the park's garbage and bring it to the municipal bins... because they're already overflowing.
Many municipalities in Rome dispose of garbage through large bins placed on the street at the bottom of apartment buildings. Especially during the winter, these bins are not regularly emptied, causing piles of waste around them and litter being carried around by the wind.
The same happens with parks' garbage bins, with the added challenge that you probably can't pick up the park's garbage and bring it to the municipal bins... because they're already overflowing.