About 30 protesters temporarily blocked the escalators leading to the Metro at Union Station on Friday morning. (Maria Sacchetti/The Washington Post)

Immigrants and their advocates will demonstrate in Washington and across the country on Monday to demand an end to President Trump’s push to deport millions of immigrants and build a wall on the U.S.-Mexico border.

Up to 150 businesses in the District, Maryland and Virginia are expected to close, according to CASA executive director Gustavo Torres, as immigrants stay home from work and people gather in Dupont Circle and Malcolm X Park for separate marches that will converge in front of the White House.

May 1 marches are held annually to mark International Workers’ Day and to support immigrant rights. This year marks the first under Trump, who assailed illegal immigration during the campaign and swiftly ramped up enforcement after he took office in January.

This year’s march is called “Rise Up,” and labor, faith and immigrant-rights organizations said they will call on the GOP-controlled Congress to block funding for Trump’s “deportation machinery,” including the border wall and the deportations of the 11 million immigrants in the United States illegally.

Organizers said shops and businesses will shutter and marchers will flood the streets in dozens of cities nationwide, including New York and Los Angeles. The permit application that leaders of the D.C. effort submitted to the National Park Service said up to 5,000 people could gather at Lafayette Square, across from the White House.

Protesters urged Metro commuters to join them in the demonstrations on Monday. (Maria Sacchetti/The Washington Post)

On Friday, about 30 protesters accompanied by a mariachi troupe temporarily blocked the escalators leading to the Metro at Union Station and urged commuters to join them in the demonstrations on Monday.

Some commuters grew angry and pushed through, but others hugged protesters in support.

“We want to be able to disrupt the way that D.C. has been disrupting immigrant families, not only for the last three months, but for the last 15 years,” said Maria Fernanda Cabello, a 26-year-old immigrant from Mexico and spokeswoman for Cosecha, the grass roots organization that led Friday’s protest. “We know that at the end of the day, the only way we will win is if the people all organize together.”

Besides street marches, plans for Monday also include teach-ins to show immigrants their rights if they are arrested and work stoppages on farms and at colleges and universities, said Kica Matos, a spokeswoman for the Fair Immigration Reform Movement, the largest network of immigrant-rights organizations in the United States and a lead organizer of the events.

Facebook, Google and the City of Seattle have all told employees they are free to take the day off to protest. All told, Matos said, they plan 149 events in 125 cities and 35 states, and one overseas in Vienna.

Activists held a Day Without Immigrants strike in February, after Trump took office and issued a battery of executive orders that directed the government to arrest undocumented immigrants, punish sanctuary cities that shield immigrants from deportation and bar travelers from certain Muslim-majority nations. Some key aspects of those orders have been temporarily blocked.

Trump’s supporters worry that he is backing down from a pledge to build a wall on the southern border, which the president denies.

On Thursday, a handful of people, led by a Fairfax County teenager, held signs in front of the White House to urge the president to keep his promise.

“Build the wall,” the teenager, who declined to give his name, shouted as the president departed an event at the Veterans Affairs office near Lafayette Square. “Your supporters need a wall.”