For too long, the march organizers said, the women’s rights movement focused on issues that were important to well-off white women, such as the ability to work outside the home and attain the same high-powered positions that men do. But minority women, they said, have had different priorities. Black women who have worked their whole lives as maids might care more about the minimum wage or police brutality than about seeing a woman in the White House. Undocumented immigrant women might care about abortion rights, they said, but not nearly as much as they worry about being deported.

This brand of feminism — frequently referred to as “intersectionality” — asks white women to acknowledge that they have had it easier. It speaks candidly about the history of racism, even within the feminist movement itself. The organizers of the 1913 suffrage march on Washington asked black women to march at the back of the parade.

The issue of race has followed the march from its inception. The day after the election, Bob Bland, a fashion designer in New York, floated the idea of a march in Washington on Facebook. Within hours, 3,000 people said they would join. Then a friend called to tell Ms. Bland that a woman in Hawaii with a similar page had collected pledges from 12,000 people.

“I thought, ‘Wow, let’s merge,’” Ms. Bland recalled.

As the effort grew, a number of comments on Facebook implored Ms. Bland, who is white, to include minority women on the leadership team. Ms. Bland felt strongly that it was the right thing to do. Within three days of the election, Carmen Perez, a Hispanic activist working on juvenile justice, and Tamika D. Mallory, a gun control activist who is black, joined Ms. Bland.

Gloria Steinem, honorary co-chairwoman of the march along with Harry Belafonte, lauded their approach. “Sexism is always made worse by racism — and vice versa,” she said in an email.

Ms. Steinem, who plans to participate in a town hall meeting during the march with Alicia Garza, a co-founder of Black Lives Matter, said even contentious conversations about race were a “good thing.”

“It’s about knowing each other,” she wrote. “Which is what movements and marches are for.”

But the tone of the discussion, particularly online, can become so raw that some would-be marchers feel they are no longer welcome.