A recent public service ad campaign at Metrobus stops purports to teach people in Mexico City how to be better citizens, "for a more positive city." Among the recommendations: throw garbage where it belongs. If it's true that chilangos are notorious litterbugs, this overly full garbage can gives us a clue as to why.  Trash cans are few and far between and collection is spotty, even in spitting distance of the Metrobus signs.

I've posted about garbage before. Actually ... more than once. Am I putting too fine a point on this?