For a second consecutive day, thousands of protesters flowed through the streets of several cities Sunday to call for an end to the funding of the Iraq war or the immediate return of U.S. troops.

Demonstrators converged in San Francisco, New York, Portland, Ore., and elsewhere to mark the fourth anniversary of the U.S. invasion of Iraq and call on President Bush to heed what they said was the will of the people.

In largely peaceful demonstrations, about 3,000 people in San Francisco closed Market Street; in New York, more than 1,000 protesters converged in a park near the U.N. headquarters.

Dozens of police in San Francisco on foot and motorcycle blocked traffic and kept an eye on the crowd, which stretched for blocks through the financial district. No arrests were reported by late Sunday afternoon.