“Barack Obama, yes we can! Stop this dirty pipeline plan!” The voices of over 40,000 others as passionate and purposeful as myself fed into the positive energy that flowed down Constitution Avenue to the President’s front door. On Sunday, Feb. 17, I joined tens of thousands in Washington, D.C. at the Forward on Climate Rally — the largest of its kind in U.S. history — to tell President Obama to stop the building of the Keystone XL Pipeline.