Protesters calling for Egypt's military to hand over power have beaten back a new raid by security forces to evict them from Cairo's Tahrir Square after more than 48 hours of violence in the heart of the Egyptian capital. Security forces fired tear gas and attacked a makeshift field hospital on Monday morning, while protesters broke up pavements to hurl chunks of concrete at police. Egypt's health ministry says at least 22 people have been killed and 1,500 wounded in clashes between government forces and protesters in Cairo and other cities since Saturday, raising concerns over the conduct of parliamentary elections due to begin on 28 November.