In the period of Hazrat Mahdi (as); like the collapse of Darwinism and materialism, bigotry and obscurantism will be wiped out. The system of the Mahdi will sweep over obscurantism so much so that it will never come out again. But just after the period of the Mahdi (as) time, communism will rise from the grave again; though [the terror of] the doomsday will break out over those [communists]. That form of communism will be a much more corrupt and bloodier form. - Harun Yahya