The influence of secular revolutionary movements on terrorism extends well beyond Islamists. In God Is Not Great, Christopher Hitchens notes that, long before Hizbullah and al-Qaida, the Tamil Tigers of Sri Lanka pioneered what he rightly calls "the disgusting tactic of suicide murder". He omits to mention that the Tigers are Marxist-Leninists who, while recruiting mainly from the island's Hindu population, reject religion in all its varieties. Tiger suicide bombers do not go to certain death in the belief that they will be rewarded in any postmortem paradise. Nor did the suicide bombers who drove American and French forces out of Lebanon in the 80s, most of whom belonged to organisations of the left such as the Lebanese communist party. These secular terrorists believed they were expediting a historical process from which will come a world better than any that has ever existed. It is a view of things more remote from human realities, and more reliably lethal in its consequences, than most religious myths.
"Omitting to mention" seems to be a habit of Hitchens. Theodore Dalrymple scored him on the same point when he reviewed his autobiography for First Things.