Howard Zinn: "overly schematic, simplistic and ideologically driven"

Even serious leftist intellectuals like The Nation's Eric Alterman admit that Howard Zinn's work is political propaganda:

"Personally, while I found the poetry and audacity of Zinn's work exhilarating upon first encountering it, by the time I earned my history doctorate, it felt overly schematic, simplistic and ideologically driven. Politically, I also found myself at odds with Zinn, who supported Ralph Nader not only in 2000 but also in 2004 and even in 2008, and who recently judged Barack Obama's approach to foreign policy to be 'hardly any different from a Republican.'"

More systematic critiques of Zinn's work here.