When Libby Chamberlain, the creator of the pro-Hillary Clinton Facebook group Pantsuit Nation, announced this week that she plans to publish a Pantsuit Nation-themed book, she framed the publication deal as a collective victory for the group.

“A book of YOU. A book BY YOU,” she wrote. “A permanent, beautiful, holdable, snuggle-in-bed-able, dogear-able, shareable, tearstainable book.”

But pretty swiftly, she faced a backlash from some of the page’s members, who derided the deal as a betrayal of the group’s primary function as a private place for people to share personal stories. Many commenters asked whether people whose stories appeared in the book would be compensated, and how the profits would be spent. Some accused Ms. Chamberlain of crass profiteering.

“What a sell-out! You had the biggest group of new political activists this country has ever seen, and you chose story-telling and profiting off that instead of harnessing that energy to make the country better,” one member wrote on the page.