Thousands of protestors surrounded the White House last weekend demanding Barack Obama block the tars sands pipeline because of its implications for worsening the climate crisis:

Thousands of protesters gathered in Lafayette Square across from the White House on Sunday to oppose a plan for a transnational oil pipeline they fear could harm the environment.

At one point, the crowd linked hands to surround the White House, keeping up pressure on President Barack Obama as his administration decides whether to approve the massive Keystone XL project.

Demonstrators chanted "yes we can, stop the pipeline," while other protesters carried a plastic tube simulating the pipeline that would run 1,700 miles through six states. The protest drew support from actor Mark Ruffalo, Presidential Medal of Freedom winner John Adams and NASA scientist James Hansen, each of whom spoke to the crowd.

As I have written before, the tar sands are the dirtiest source of liquid fuel on the planet. President Obama should listen to the voices of those outside the White House and block this dirty energy pipeline.

Cross-posted from Al's Journal.