On September 8, 1978, the shah’s security force fired on a large group of demonstrators, killing hundreds and wounding thousands. Two months later, thousands took to the streets of Tehran, rioting and destroying symbols of westernization, such as banks and liquor stores. Khomeini called for the shah’s immediate overthrow, and on December 11 a group of soldiers mutinied and attacked the shah’s security officers. With that, his regime collapsed and the shah fled.