From The Hill:

Environmental groups gathered on the National Mall in Washington, D.C. Sunday and marched on the White House for a climate change rally largely aimed at pressuring President Obama to reject the Keystone XL oil sands pipeline.

Organizers said 35,000 activists attended the rally, where speakers portrayed the battle over the pipeline as a struggle between grassroots green groups and deep-pocketed special interests.

How’d they get to the rally?