Egyptian security forces and supporters of ousted leader Mohammed Morsi clashed again on Saturday morning, leaving at least 65 people dead, according to Egypt’s Health Ministry. The violence began after “hundreds of thousands” of people took to Cairo’s streets in a show of support for Egypt’s interim military government. At some point, the police attacked a large group of Muslim Brotherhood demonstrators, who have been protesting Morsi’s ouster for weeks, with teargas (the Egyptian government claims they were trying to break up a fight between the Muslim Brotherhood and the other protesters.) The police then opened fire. “They are not shooting to wound, they are shooting to kill,” Brotherhood spokesman Gehad El-Haddad told Reuters. “The bullet wounds are in the head and chest.” He also said the Muslim Brotherhood planned to continue demonstrating despite Saturday’s deaths and the similarly bloody confrontation that took place earlier this month. “We will stay here until we die, one by one,” said Muslim Brotherhood protester Ahmed Ali.