Thousands of Iranians have reportedly filled the streets of the capital, Tehran, and other cities as they reignite mass protests against the government.<br /><br />Clashes have been reported around the capital, where witnesses say up to four people were killed when police and militia opened fire on the crowds.<br /><br />The protests have been captured on videos and photos posted on Youtube and the social networking site, Twitter.<br /><br />Al Jazeera's Nazanine Moshiri reports.
