The killings drove the official death toll to at least 17 after a week of massive street demonstrations by protesters who say hardline President Mahmoud Ahmadinejad stole his re-election win. But searing images posted online – including gruesome video purporting to show the fatal shooting of a teenage girl – hinted the true toll may be higher. Police and the feared Basij militia swarmed the streets of Tehran to prevent more protests and the government intensified a crackdown on independent media – expelling a BBC correspondent, suspending the Dubai-based network Al-Arabiya and detaining at least two local journalists for U.S. magazines.