Thousands of demonstrators are expected to participate in protest and marches across the country on Monday to mark May Day, also knows as International Workers Day.

May Day often drives actions highlighting workers’ rights, but this year many protesters will be focused on opposing President Trump, USA Today reported Sunday.

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“There’s a real galvanization of all the groups this year,” Fernanda Durand of CASA in Action told the paper. That group will lead a march of 10,000 people in Washington, D.C., to bring attention to immigrants’ rights.

The Rise Up movement has organized 259 events in more than 200 cities, USA Today said.

Another group effort, Beyond the Moment, plans action in 50 cities, it added.

Trump released a statement on Friday declaring May 1 “Loyalty Day” to “recognize and reaffirm our allegiance to the principles” upon which America was built.

The protests come just days after thousands of people marched in D.C. to protest the Trump administration's policies on the environment and climate change.

This report was updated on May 1 at 5:46 a.m.