Protests in Egypt over a U.S. anti-Muslim film continued into the fourth day Friday as police in riot gear fired at demonstrators in Tahrir Square. Rioters threw stones at police and overturned burnt-out cars near the U.S. Embassy—where protesters had scaled the walls earlier in the week and which has since been fortified—and police attempted to clear the square. The powerful Muslim Brotherhood called off Friday’s planned demonstration. Meanwhile, demonstrations continued throughout the Muslim world over the film, which portrays the Prophet Muhammad as a fraud. Four people were killed and 34 wounded Thursday outside the U.S. Embassy in Yemen, and more than 500 people reportedly protested in Tehran.