When Keke notes:
The ideology was the repository of the true and the good, the key to the welfare of humanity. Its enemies had to be exterminated without mercy because they stood in the way. As the ideologues saw it, the future of mankind was a high enough stake to justify any deed that served their purpose. As Loomis puts it, “[A]ll who played a role in the drama . . . believed themselves motivated by patriotic and altruistic impulses. All . . . were able to value their good intentions more highly than human life. . . . There is no crime, no murder, no massacre that cannot be justified, provided it be committed in the name of an Ideal.”it is to presage a comparison between the French ideology and that of Communism, Nazism and Islamofascism. The Pan Arab socialists who thought they could ride the tiger of a fundamentalist Islam seem to have made a serious error. They might have reflected that the Jacobins enjoyed not just Robespierre but Napoleon after for all their troubles.
One might think that an ideology which worships Reason as its goddess would have a little better foresight.