Activist Cornel West is endorsing Green Party candidate Jill Stein after previously backing Bernie Sanders Bernie SandersNYT editorial board remembers Ginsburg: She 'will forever have two legacies' Two GOP governors urge Republicans to hold off on Supreme Court nominee Sanders knocks McConnell: He's going against Ginsburg's 'dying wishes' MORE’s presidential bid.

“This November, we need change,” he wrote Thursday in an op-ed for The Guardian. "Yet we are tied in a choice between [Donald] Trump, who would be a neo-fascist catastrophe, and [Hillary] Clinton, a neo-liberal disaster."

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West then said he would back Stein over the alternatives.

“I am with her – the only progressive woman in the race – because we’ve got to get beyond this lock-jaw situation,” added West, a member of the Democratic National Committee’s (DNC) platform drafting committee.

West said he could not in good conscience follow Sanders’s lead in supporting Clinton’s campaign earlier this week.

“I have a deep love for my brother Bernie Sanders, but I disagree with him on Hillary Clinton Hillary Diane Rodham ClintonBiden leads Trump by 36 points nationally among Latinos: poll Democratic super PAC to hit Trump in battleground states over coronavirus deaths Battle lines drawn on precedent in Supreme Court fight MORE,” he said of the independent Vermont senator.

“I don’t think she would be an ‘outstanding president,’” West added of the presumptive Democratic presidential nominee. “Her militarism makes the world a less safe place.”

West added the presidency of Bill Clinton William (Bill) Jefferson ClintonBattle lines drawn on precedent in Supreme Court fight Sunday shows - Ruth Bader Ginsburg's death dominates Bill Clinton on GOP push to fill Ginsburg vacancy: Trump, McConnell 'first value is power' MORE, Hillary Clinton’s husband, is responsible for many of the nation’s problems today.

“Clinton policies of the 1990s generated inequality, mass incarceration, privatization of schools and Wall Street domination,” he said.

“There is also a sense that the Clinton policies helped produce the right-wing populism that we’re seeing now in the country. And we think she’s going to come to the rescue? That’s not going to happen.”

Stein on Thursday celebrated West’s endorsement by thanking the liberal academic for his blessing on Twitter.

Sanders on Tuesday endorsed Clinton in an event intended to rally Democrats against Trump, the presumptive GOP presidential nominee.

“Secretary Clinton has won the Democratic nominating process, and I congratulate her for that,” he said in Portsmouth, N.H.

“She will be the Democratic nominee for president, and I intend to do everything I can to make certain she will be the next president of the United States."