Images from Iran

4th November has been an important day in Iran for several decades, and today marks the the 30th anniversary of the storming of the US embassy in Tehran by "students following the imam's line"—one of the most memorable moments during the Islamic revolution of 1979.

Opposition protesters have marked today’s historic significance by taking to the streets. While the scale of the anti-government protests—and the regime's crackdown—remains unclear, wire services and state-controlled media have reported police using tear gas and clashing violently with protesters.

Though Iran has banned nearly all media coverage of non-sanctioned rallies and protests, the citizen photo-journalism website Demotix has published a fresh collection of images from today’s events, including a picture of what looks like a protester kicking away a smoking teargas shell. Keep up with the latest news from Demotix here; they will continue to upload photos, eyewitness accounts and comments as the situation develops.