Watch: Buildings in Tehran set on fire as demonstrations spread across Iran

Anti-government protests are escalating in Iran, with demonstrations spreading across the country for twelve consecutive days. Verified footage shows buildings, including mosques in Tehran's Gholhak and Sa'adat Abad neighborhoods, set on fire. The unrest, triggered by frustration over the collapse of Iran's currency, has now reached more than 100 cities and towns throughout all 31 of Iran's provinces. Human rights groups are monitoring the widespread national demonstrations.