From the AP:
Daryl Hannah was arrested outside the White House by park police for refusing to move off sidewalk. The sit-in protested a planned oil pipeline from Canada to Texas.
The sit-in Tuesday involved dozens protesting the Keystone XL pipeline. It would go through Montana, South Dakota, Nebraska, Kansas, Oklahoma and Texas to refineries in Houston and Port Arthur, Texas.
Before she was arrested, Hannah told The Associated Press the protesters want to be free from dependence on fossil fuels. The group calls for clean energy investments instead. Hannah says they hope President Barack Obama will not bow to oil lobbyists.