Activists hang sign on Mount Rushmore

SIOUX FALLS, S.D. (AP) — Environmentalists using park service rock anchors scaled Mount Rushmore on Wednesday and unfurled a banner along President Abraham Lincoln's face challenging America's leaders to stop global warming.

Eleven people were charged with trespassing and the misdemeanor crime of climbing on Mount Rushmore National Monument, U.S. Attorney Marty Jackley said. They pleaded not guilty to all charges.

The environmental group Greenpeace said in a statement that three of its members hung the banner on Mount Rushmore while other activists blocked access to the site.