Heavy gunfire rings out in Cairo protest square

FOCUS-GLOBAL.CO.CC-CAIRO (AP) — Bursts of heavy gunfire rained into Cairo's Tahrir Square before dawn Thursday, killing at least three anti-government demonstrators among crowds trying to hold the site after a dramatic assault hours earlier by supporters of President Hosni Mubarak, according to a protest organizerSustained bursts of automatic weapons fire and powerful single shots rattled into