Explanation: In 1979, the Iranian people rose up to overthrow the repressive Shah and his authoritarian regime in the Iranian Revolution. Champagne all around, right?
Well, no, not quite. Due to skilled political maneuvering and a hefty dose of outright lying about their intentions, the Islamist faction of Ruhollah Khomeini managed to gain power, first purging the liberal factions which had been part of the revolutionary coalition, and then after that, the leftist factions once they were no longer needed and had no allies to resist Khomeini's fascist vision. Khomeini then proceeded to construct a new 'Islamic Republic', complete with repression of public opinion and secret police, just like the good old days of the Shah!