Agnès Varda’s film essay on gleaning explores the many implications of this ancient practice. Gleaning—gathering food left on the fields after harvest—is an ancient tradition in Europe. In France, as we learn in the great Agnès Varda’s endearingly personal film from 2000, The Gleaners and I, gleaning is protected by law, although the laws vary in different provinces, and with different crops. Varda was intrigued not only with this practice, but with all its echoes and implications—our attitudes and policies towards waste; our ideas about property, labor and sustenance; the dumpster-diving of the homeless in the cities; artwork based on…