For the second time in a month, tens of thousands of protesters are expected to turn out in Washington on Saturday to voice their concern over climate change in a mass demonstration marking the 100th day of Donald Trump’s presidency.

The Peoples Climate will march in dozens of cities including the U.S. capital, which is part of a broader effort to build a momentum behind candidates with strong environmental records for next year’s midterm elections and the 2020 presidential race, organizers said.

“We’re using this as a tactic to advance the strategy of building enough power to win on climate over the course of the long haul,” said Paul Getsos, national coordinator for the Peoples Climate Movement. Sponsors of Saturday’s events include labor unions, the Sierra Club and civil rights groups.

As a side theme, marchers will protest Trump’s crackdown on illegal immigrants and other issues championed by the maverick Republican billionaire.

Since Trump’s inauguration on Jan. 20, there have been national protests focused on issues ranging from abortion rights to immigration and science policy.

Reuters..