So, how many protestors were there, anyway?

So, how many anti-war protestors were there in Washington, DC this weekend, anyway?

There appears to be some disagreement. The Associated Press reports perhaps 100,000:

WASHINGTON – Crowds opposed to the war in Iraq surged past the White House on Saturday, shouting “Peace now” in the largest anti-war protest in the nation’s capital since the U.S. invasion.

The rally stretched through the day and into the night, a marathon of music, speechmaking and dissent on the National Mall. Police Chief Charles H. Ramsey, noting that organizers had hoped to draw 100,000 people, said, “I think they probably hit that.”

This number is echoed by the New York Times, the Washington Post, and other news outlets. Robert Rouse of Left of Centrist, who took part, thinks there were a lot more protestors and submits his pictures as proof complaining that the news media were just taking Ramsey’s hipshot estimate. Gateway Pundit thinks the 300,000 figure proposed by ANSWER is way off and submits C-SPAN video as evidence.

The National Park Service no longer provides official estimates of this kind.

So, how many were there?

UPDATE: David Adesnik has a round-up of left-of-center blogospheric commentary on the protests. He estimates attendance was roughly 100,000.