In this Saturday, Dec. 30, 2017, file photo taken by an individual not employed by the Associated Press and obtained by the AP outside Iran, a university student attends a protest inside Tehran University while a smoke grenade is thrown by anti-riot Iranian police, in Tehran, Iran. In 1979, massive crowds marched through the streets of Iran’s capital and other cities demanding change in the first major unrest to shake the rule of hard-line Muslim clerics. Now Iran’s Islamic Republic is seeing a new, equally startling wave of unrest. This time it appears to be fueled by anger over a still faltering economy, unemployment and corruption. (AP Photo, File)

In this Saturday, Dec. 30, 2017, file photo taken by an individual not employed by the Associated Press and obtained by the AP outside Iran, a university student attends a protest inside Tehran University while a smoke grenade is thrown by anti-riot Iranian police, in Tehran, Iran. In 1979, massive crowds marched through the streets of Iran’s capital and other cities demanding change in the first major unrest to shake the rule of hard-line Muslim clerics. Now Iran’s Islamic Republic is seeing a new, equally startling wave of unrest. This time it appears to be fueled by anger over a still faltering economy, unemployment and corruption. (AP Photo, File)