Peoples Climate March

Demonstrators sit on the ground along Pennsylvania Ave. in front of the White House in Washington on April 29, 2017 during a demonstration and march in protest of President Donald Trump’s environmental policies.

People gather near the U.S. Capitol for the People’s Climate Movement before marching to the White House to protest President Donald Trump’s enviromental policies on April 29, 2017 in Washington, D.C.

Kris Larsen, 59, of Plainfield, wears a polar bear costume on a chilly, rainy Saturday while participating in the Peoples Climate March in downtown Chicago on April 29, 2017.

Thousands of demonstrators march through downtown Chicago on the 100th day of the Trump presidency on April 29, 2017, as part of the nationwide Peoples Climate March.

Thousands of demonstrators march through downtown Chicago on the 100th day of the Trump presidency on April 29, 2017, as part of the nationwide Peoples Climate March.

People gather for a climate rally on Boston Common in Boston, Saturday, April 29, 2017. Organizers say they’re marking President Donald Trump’s first 100 days in office by protesting his agenda so far.

Dori Mann takes a snapshot of friends and family posing with a snowman draped with an anti-Trump sign as they all participated in a climate change awareness march and rally, in Denver, Saturday, April 29, 2017. The gathering was among many others of its kind held nationwide marking President Donald Trump’s 100th day in office.

Trump supporters, right, taunt one of the organizers of the “100 Days of Failure” protest and march, Saturday, April 29, 2017, in New York. Thousands of people across the U.S. are marching on President Donald Trump’s hundredth day in office to demand action on climate change.