Two more Iraqi protesters have been killed in renewed clashes in the Shiite holy city of Karbala, a flashpoint in weeks of anti-government demonstrations, a protester and a medic said Wednesday. Tens of thousands of people have taken to the streets in recent weeks in the capital, Baghdad, and across the Shiite south, demanding sweeping political change. The protesters complain of widespread corruption, a lack of job opportunities and poor basic services, with regular power cuts despite the country’s vast oil reserves.