In Iraq, two more protesters have been killed in renewed clashes between security forces and anti-government protesters in the holy city of Karbala. In the capital, Baghdad, protesters clashed with security forces on a fourth bridge across the Tigris River, after previous clashes forced the closure of three other bridges, paralysing traffic.<br />'' <br />'' Security and medical officials said at least 29 people were wounded in the clash. Internet access remained limited today after a government shutdown earlier this week. <br />''  <br />'' Tens of thousands of people have demonstrated in central Baghdad and across mostly southern Iraq in recent days, calling for the overthrow of the political system. The protests are fueled by anger at widespread corruption, high unemployment and poor public services.<br />''