Protesters converged in a Copenhagen square to urge conference delegates to reach a global climate agreement on Saturday, Dec. 12, 2009. The police said they anticipated that 60,000 people would join a long march southward from Christiansborg Slotsplads, or Castle Square, toward the Bella Center, the sprawling and heavily fortified convention center where delegates and observers from nearly 200 nations are gathered to try to seek a consensus. (Johan Spanner/The New York Times)