NEW YORK (AP) -- Hundreds of protesters calling for the end of funding for the Iraq war or the immediate return of U.S. troops marched Sunday and converged on a park near the United Nations headquarters.

Union members, representatives of Rev. Jesse Jackson's Rainbow-PUSH Coalition, war veterans and others joined the demonstration, one of several staged during the weekend across the country to mark the fourth anniversary of the U.S. invasion of Iraq.

The crowd of a few hundred protesters grew as the procession, which stretched for several blocks, moved on.

Actor Tim Robbins, among the speakers at the rally, organized by the New York chapter of United for Peace and Justice, told the crowd that getting Congress to cut off funds for the war "would be a good way" to get the troops home.

"The American people want this war to end," Robbins said. "That's the message they sent last November in the election. When are we going to start listening to them?"

Robbins, a frequent war protest participant with his partner, actress Susan Sarandon, also referred to the recent revelations of substandard care and facilities at the military's Walter Reed Medical Center in Washington.

"You want to support the troops? First get them home, then take care of them," he said.

Police lined sidewalks, and some walked ahead of the protesters as they marched toward the offices of Sens. Charles Schumer and Hillary Rodham Clinton.

Demonstrators carried signs reading "Impeach Bush," and "Not one more dollar, not one more death."

No counter-demonstrators were visibly present, as they had been at a larger anti-war rally in Washington on Saturday.