Protesters faceoff with police at US Embassy clashes on Friday morning

US Embassy clashes in Tahrir square.

Protesters donning teargas masks during Friday noon prayers

Protesters carry Islamic slogans during the Friday prayers in Tahrir

Protesters join Friday noon prayers at Tahrir Square as clashes with police subside

Protesters join Friday noon prayers at Tahrir Square as clashes with police subside

Protesters shout slogans during Friday prayers

US Embassy clashes spilled into Tahrir Square on Friday morning

US Embassy clashes in Tahrir square.

An woman protester faints from teargas launched by Egyptian security near US embassy