Heavy gunfire rocks Baghdad amid violent protests

Supporters of a prominent Iraqi Shiite cleric fired rocket-propelled grenades into Iraq's Green Zone as machine gun fire crackled overhead on Tuesday, deepening the political chaos gripping the Mideast nation.Those backing influential cleric Muqtada al-Sadr fired into the Green Zone, where it appeared Iraqi security forces were firing back at them.Live television footage showed the chaos, with at least one wounded man being taken away in a three-wheel rickshaw, the Iraqi Foreign Ministry visible behind them.The death toll rose to 22 Iraqis on Tuesday after the unrest erupted the previous day, according to two medical officials.Iraq's military said four rockets were launched into the heavily fortified Green Zone.