Book excerpt: "Political power," says Howard Zinn, "is controlled by the corporate elite, and the arts are the locale for a kind of guerilla warfare in the sense that guerillas look for apertures and opportunities where they can have an effect." In Artists in Times of War, Zinn looks at the possibilities to create such apertures through art, film, activism, publishing and through our everyday lives. In this collection of four essays, the author of A People's History of the United States writes about why "To criticize the government is the highest act of patriotism." Filled with quotes and examples from the likes of Bob Dylan, Mark Twain, e. e. cummings, Thomas Paine, Joseph Heller, and Emma Goldman, Zinn's essays discuss America's rich cultural counternarratives to war, so needed in these days of unchallenged U.S. militarism.