In February 1979, after the Shah left Iran, religious leader Ayatollah Khomeini flew back to Tehran from Paris.
He had been in exile and was greeted by millions of people lining the streets.
In 2011, Mohsen Sazegara who worked for the Ayatollah, spoke to Louise Hidalgo.
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(Photo: Ayatollah Khomeini on the flight back from exile. Credit: Gabriel Duval/AFP via Getty Images)