Videos have begun emerging of Iran’s brutal crackdown on protesters after the internet was restored following a week-long government-imposed blackout.

The protests began on November 15 after a petrol price hike was announced. Demonstrations quickly grew into a wave of anti-government unrest that saw at least 100 banks and dozens of buildings torched in the worst violence since Iran put down a "Green Revolution" in 2009.

In one video, machine gun fire answers rock-throwing protesters. In others, motorcycle-riding Revolutionary Guard volunteers chase after demonstrators, while in a different location plainclothes security forces grab, beat and drag a man off the street.

Another video in Kermanshah, some 260 miles southwest of Tehran, purportedly shows security forces wearing civilian clothes and wielding nightsticks, dragging one man off by the hair of his head. The detained man falls at one point.