Washington Post: The evening’s topic was worthy of a think tank — energy, jobs and public policy. But the rollicking scene at the First Congregational Church, where Van Jones was promoting his book “The Green Collar Economy,” was as far from Washington wonkdom as you could get. Jones received an enviable introduction. Poet, performer and hip-hop theater artist Aya de León read one of her works, actor Danny Glover praised Jones and recited the Langston Hughes poem “Let America Be America Again,” and …