February 1979 ... "Shah mate"!

Dilip Hiro's "Regime change in Tehran? Don't bet on it", in the AsiaTimes, here
RFI, here

"... During the 12 months of the revolutionary movement that stretched from 1978 into 1979, the indiscriminate use of live fire by the shah’s regime led to between 10,000—the government figure—and 40,000—the opposition’s statistic—deaths. In the six months of the street protest this time around, the total, according to the opposition, is 106..."