The complex realities of subsistence escape “Hillbilly Elegy.” But as far back as Charlie Chaplin’s “City Lights,” filmmakers have been turning a discerning eye on destitution.The complex realities of subsistence escape “Hillbilly Elegy.” But as far back as Charlie Chaplin’s “City Lights,” filmmakers have been turning a discerning eye on destitution.Read MoreMovies, Poverty, City Lights (Song), Nomadland (Movie), They Live (Movie), Wendy and Lucy (Movie), Where Is Kyra? (Movie), Winter’s Bone (Movie)