Immediately after the September 11 attacks, he spoke of caution, of not veering into overreaction, yet soon he was picking fights with anyone who dared question U.S. reaction or even contextualize the attacks as "Anti-American" or worse. His early smears of Noam Chomsky and many others allowed for the entry -- even into some quarters of the Left for a short time -- of talk of loyalty and patriotism.
Hitchens became the patron saint of what some came to call "The Decent Left," those who signed the "Euston Manifesto." Seymour’s first book, The Liberal Defence of Murder, gives a history and analysis of this tendency, and is well worth the read. But Hitchens went far beyond even the "decent left" in his calls for civilizational warfare, his shocking and even genocidal Islamophobia (stating that he refused to share a planet with this "enemy"), even, tragically, his disavowal of his early and stalwart anti-Zionism.
It reeks of the unintentionally self-parodying, hysterical outrage that only a stupid western Marxist could muster.