Egyptian protesters react after launching fireworks during a demonstration near Tahrir Square, Cairo, Egypt, Thursday, Feb. 2, 2012. Egyptian police fired tear gas Thursday at thousands of demonstrators outside the Interior Ministry protesting the security forces' failure to prevent a soccer riot that killed more than 70 people. (AP Photo/Muhammed Muheisen)

Security forces clashed with protesters enraged by the failure of police to prevent a soccer riot that killed 74 people.

Security forces clashed with stone-throwing protesters enraged by the failure of police to prevent a soccer riot that killed 74 people, as sports violence spiralled into a new political crisis for Egypt.