<p><br /> Hundreds of anti-government supporters in Bangkok shaved their heads on Thursday in protest at Thai Prime Minister Abhisit Vejjajiva's government.<br /> </p><p><br /> Men, women and children from the so-called Red Shirts protest group took part in this latest action.<br /> </p><p><br /> The protesters want the Thai Prime Minister to dissolve Parliament and call new elections.<br /> </p><p><br /> Many have been camping out on the streets of Bangkok since March 14, demanding the dissolution of parliament and calling for fresh elections.<br /> </p><p><br /> Protest leader Suporn Atthawong warned Abhisit that if he "insists on staying in power, we'll use tougher measures in the future."<br /> </p><p><br /> On Wednesday, Thailand's political battleground had shifted to Parliament, where opposition lawmakers boycotted proceedings in a protest against tight security imposed by the military amid the Red Shirt anti-government rallies.<br /> </p>