Today in Cairo, Egypt, at least five people died in a clash between Egyptian security forces and supporters of the Muslim Brotherhood. The Associated Press reports that this fight represents the deadliest violence at Islamist protests in a while. More than 500 Brotherhood supporters marched in the Cairo’s Giza neighborhood following the end of Ramadan and the start of Eid al-Fitr, a major Muslim holiday. Fights erupted between marchers and local residents and police, escalating quickly to deadly gunfire.