At least four protesters in Iran are thought to have been shot dead by the country’s security forces during anti-government demonstrations in Tehran. One of the victims is believed to be the 35-year-old nephew of Mir Hossein Mousavi, the opposition politician whose supporters launched massive protests after the controversial re-election of Mahmoud Ahmadinejad this past summer. Iranian officials have released few details about the other victims, but one was said to be an elderly man and another a young woman, both killed when security forces opened fire on the huge crowds of protesters that had gathered in central Tehran for the emotionally charged Shia festival of Ashura. One opposition website reported the police shot at the crowd after failing to disperse them with batons and tear gas. Another claimed some officers are resisting orders to shoot, firing their weapons into the air instead.