1 / 18Schoolgirls wave Iranian flags during a ceremony celebrating the 40th anniversary of the Islamic Revolution, at the Azadi, or Freedom, Square, in Tehran, Iran, Monday, February 11, 2019. Hundreds of thousands of people poured out onto the streets of Tehran and other cities and towns across Iran on Monday, marking the date 40 years ago that is considered victory day in the country's 1979 Islamic Revolution. (AP Photo/Vahid Salemi)
2 / 18Iranian demonstrators chant slogans during a ceremony celebrating the 40th anniversary of the Islamic Revolution, at the Azadi, Freedom, Square in Tehran, Iran, Monday, February 11, 2019. Crowds streamed in the rain from a dozen of the capital's far-flung neighbourhoods to mass in central Tehran waving Iranian flags and chanting "Death to America" — a chant that has been standard fare at anti-US rallies across Iran. Posters in Farsi read, "Death to Israel." (AP Photo/Vahid Salemi)
3 / 18A demonstrator holds an anti-US placard during a ceremony celebrating the 40th anniversary of the Islamic Revolution, at the Azadi, Freedom, Square in Tehran, Iran, Monday, February 11, 2019. (AP Photo/Vahid Salemi)
4 / 18Two women shelter from the rain during a ceremony celebrating the 40th anniversary of the Islamic Revolution, at the Azadi, Freedom, Square in Tehran, Iran, Monday, February 11, 2019. In Tehran, crowds streamed in the rain from a dozen of the capital's far-flung neighbourhoods to mass in central Tehran Azadi, or Freedom Square, waving Iranian flags and chanting "Death to America" — a chant that has been standard fare at anti-US rallies across Iran. (AP Photo/Vahid Salemi)
5 / 18Children wave Iranian flags during a ceremony celebrating the 40th anniversary of the Islamic Revolution, at the Azadi, Freedom, Square in Tehran, Iran, Monday, February 11, 2019. (AP Photo/Vahid Salemi)
6 / 18Iranians attend a ceremony celebrating the 40th anniversary of the Islamic Revolution as one of them holds a portrait of the late revolutionary founder Ayatollah Khomeini, at the Azadi, Freedom, Square in Tehran, Iran, Monday, February 11, 2019. (AP Photo/Vahid Salemi)
7 / 18Demonstrators chant slogan in a ceremony celebrating the 40th anniversary of the Islamic Revolution, at the Azadi, Freedom, Square in Tehran, Iran, Monday, February 11, 2019. (AP Photo/Vahid Salemi)
8 / 18Iranians attend a ceremony celebrating the 40th anniversary of the Islamic Revolution, near the Azadi, or Freedom Tower, in Tehran, Iran, Monday, February 11, 2019. (AP Photo/Vahid Salemi)
9 / 18Iranian women attend a rally marking the 40th anniversary of the 1979 Islamic Revolution, as two of them hold portraits of Iranian Supreme Leader Ayatollah Ali Khamenei, in Tehran, Iran, Monday, February 11, 2019. (AP Photo/Ebrahim Noroozi)
10 / 18A man holds a placard that reads in Farsi, "Death to England," during a rally marking the 40th anniversary of the 1979 Islamic Revolution, in Tehran, Iran, Monday, February 11, 2019. (AP Photo/Ebrahim Noroozi)
11 / 18Two boys hold up posters of Iranian Supreme Leader Ayatollah Ali Khamenei, right, and late revolutionary founder Ayatollah Khomeini, left, during a rally marking the 40th anniversary of the 1979 Islamic Revolution, in Tehran, Iran, Monday, February 11, 2019. (AP Photo/Ebrahim Noroozi)
12 / 18Iranian women hold up portraits of Iranian Supreme Leader Ayatollah Ali Khamenei, during a rally marking the 40th anniversary of the 1979 Islamic Revolution, in Tehran, Iran, Monday, February 11, 2019. (AP Photo/Ebrahim Noroozi)
13 / 18A man holds a portrait of Iranian Supreme Leader Ayatollah Ali Khamenei, during a rally marking the 40th anniversary of the 1979 Islamic Revolution, in Tehran, Iran, Monday, February 11, 2019. (AP Photo/Ebrahim Noroozi)
14 / 18An Iranian woman holds up a portrait of Iranian Supreme Leader Ayatollah Ali Khamenei, as she makes the victory sign during a rally marking the 40th anniversary of the 1979 Islamic Revolution, in Tehran, Iran, Monday, February 11, 2019. (AP Photo/Ebrahim Noroozi)
15 / 18An Iranian woman holds an effigy of US president Donald Trump, during a rally marking the 40th anniversary of the 1979 Islamic Revolution, in Tehran, Iran, Monday, February 11, 2019. (AP Photo/Ebrahim Noroozi)
16 / 18Iranian Revolutionary Guard members arrive for a ceremony celebrating the 40th anniversary of the Islamic Revolution, at the Azadi, or Freedom, Square, in Tehran, Iran, Monday, February 11, 2019. On February 11, 1979. Iran's military stood down after days of street battles, allowing the revolutionaries to sweep across the country, and the government of Shah Mohammad Reza Pahlavi resigned. (AP Photo/Vahid Salemi)
17 / 18Iranians wave national flags during a ceremony celebrating the 40th anniversary of the Islamic Revolution, at the Azadi, or Freedom, Square, in Tehran, Iran, Monday, February 11, 2019. (AP Photo/Vahid Salemi)
18 / 18A group of Iranians listen to President Hassan Rouhani address the crowd during a ceremony celebrating the 40th anniversary of the Islamic Revolution, at the Azadi, or Freedom Square, in Tehran, Iran, Monday, February 11, 2019. (AP Photo/Vahid Salemi)
