Howard Zinn died Wednesday at the age of 87. He is best known for writing A People’s History of the United States (1980), a Marxist tract that describes America as a predatory and repressive capitalist state — sexist, racist, imperialist — that is run by a corporate ruling class for the benefit of the rich. A People’s History has sold more than a million copies, making it one of the best-selling history books of all time. It has long been one of most influential texts in college classrooms. To view a comprehensive profile of Zinn and his ideas, click here.