Members of an underground pro-Hillary Clinton Facebook group are livid after the operator announced she would be cashing in on the page with a book deal.

News that Pantsuit Nation founder Libby Chamberlain would be putting out a tome next May based on comments from the popular page — which has some 4 million members — prompted a flood of angry comments calling the Brooklin, Maine, woman a sellout.

“Libby you should be ashamed. This is a disgusting betrayal of trust and using others’ stories to make money and gain fame,” wrote a Pantsuit Nation member named Jamie Bryant, who describes herself on Twitter as a “radical feminist bitch.”

The Pantsuit Nation Facebook page was started last October as a place where enthusiastic supporters of the Democratic presidential nominee could gather and talk about their favorite candidate.

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