In “The American Way of Poverty: How the Other Half Still Lives,” author Sasha Abramsky implores Americans to recognize the severity of economic deprivation in their country, and he proposes a series of measures to remedy or at least substantially alleviate it. By the end of 2010, he writes, 15.2 percent of Americans were living below the poverty line, an increase of roughly 15 million people since the start of the century. And it’s the…