SANAA (Reuters) - Hundreds of anti-government demonstrators and government loyalists fought with rocks and batons in the Yemeni capital Tuesday in political unrest fuelled by Egypts uprising. About 1,000 protesters, marching down a street leading to the presidential palace, were blocked by riot police. As they dispersed into side streets, they were confronted by hundreds of government backers and both sides hurled rocks at each other. Four protesters, including one member of parliament, were wounded, two with head injuries. Police soon stamped out the clashes. The people want the fall of the regime This corrupt government should leave the country some of the protesters shouted, demanding the resignation of President Ali Abdullah Saleh, a US ally against al Qaedas Yemen-based wing.