Iran: Protesters Clash with Security Forces on Anniversary of Election · Global Voices
Fred Petrossian

Witnesses in Tehran said  scattered clashes erupted on Saturday between Iran's security forces and demonstrators gathering at key sites to mark the first anniversary of a contested presidential election. It seems that Iranians – despite the request of the leading opposition figures to call off demonstrations – protested in a few places including the universities to defy the Islamic Republic regime one more time.
There was a heavy security presence in Ferdowsi Sqaure in the center of Tehran:
Behdabra  writes on Friendfeed that protesters clashed with security forces in Vali Asr street in Tehran, and lighted trash cans on fire.
Controversy on the number of protesters
While Iran Green Voice posted that 1000 of students from University of Tehran clashed with security forces, a reader left a comment: “Why do we lie, we become like them [Islamic government]. I was there and the number was about 50 people.”
Mean while United4Iran, a non-partisan global network of Iranian and non-Iranian individuals and human rights activists,  organized demonstrations in 70 cities around the world.
Protest in Sharif University in Tehran
Protesters chanted Allaho Akbar (God is Great).