Opponents of President Trump are planning protests on Saturday in all 50 states to oppose the president’s slash and burn attacks on federal health care programs, and government workers, a message that they say appeals to a politically diverse set of Americans.

The mass action, “Hands Off!,” was organized by Indivisible, MoveOn and several other groups that led protests about abortion rights, gun violence and racial justice during the first Trump administration. But organizers said they are now working with 150 local, state and national partners to emphasize a new message: President Trump is threatening health care, Social Security and education, making life harder for the average American, while benefiting his richest friends.

“We need to bring in new people, and that’s where Trump’s policies are so consequential,” said Britt Jacovich, a spokeswoman for MoveOn.

Longtime Trump opponents are re-examining the huge protest movements that defined his first stint in office. The demonstrations minted new generations of activists and helped the Democrats retake the House in 2018, but they did not protect Roe v. Wade or compel Congress to pass police reform legislation. And in the end, Mr. Trump came roaring back in November and won the election.

“The protests were effective in the short term, but in the longer term, unless there is some kind of resounding defeat politically, movements like Trump’s are able to reconstitute and, in this case, win,” said Erica Chenoweth, a political scientist who studies social movements and nonviolent resistance.

Saturday’s protests will surely include signs and speeches about reproductive rights, trans rights and racial justice. In other ways, the events may bear little resemblance to the mass demonstrations in Mr. Trump’s first term, particularly the Women’s March on Washington, which set the tone for the resistance. The day after his inauguration, more than half a million pink-hatted protesters descended on the nation’s capital to watch Madonna perform and celebrities give keynote speeches, and millions more marched in cities nationwide.

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