Several thousand anti-war demonstrators marched through downtown Washington, clashing with police at the foot of the Capitol steps where more than 190 protesters were arrested. The group marched from the White House to the Capitol on Saturday to demand an end to the Iraq war. Their numbers stretched for blocks along Pennsylvania Avenue, and they held banners and signs and chanted, «What do we want? Troops out. When do we want it? Now.» Army veteran Justin Cliburn, 25, was among a contingent of Iraq veterans in attendance. «We're occupying a people who do not want us there,» Cliburn said of Iraq. «We're here to show that it isn't just a bunch of old hippies from the 60s who are against this war.» Counter protesters lined the sidewalks behind metal barricades. There were some heated shouting matches between the two sides, the Associated Press reported. The arrests came after protesters lay down on the Capitol lawn in what they called a «die in» _ with signs on top of their bodies to represent soldiers killed in Iraq. When police took no action, some of the protesters started climbing over a barricade at the foot of the Capitol steps. Many were arrested without a struggle after they jumped over the waist-high barrier.