Conservative firebrand Ann Coulter took to Twitter to rip the University of California-Berkeley for cancelling her speech scheduled for Thursday.

University administration caved to threats from militant communist and anarchist groups, such as Antifa, which vowed violence similar to the actions taken against Milo Yiannopoulos and Donald Trump supporters.

“I’m so sorry Berkeley canceled my speech,” she tweeted this afternoon. “I’m so sorry (Young America’s Foundation) acquiesced in the cancellation,” she continued, referring to the group sponsoring her appearance.

“And I’m sorry for free speech crushed by thugs.”

During an appearance on Fox News, Coulter explained she had agreed to Berkeley’s every demand. Nevertheless, the university still canceled.

“If we had continued to fight we would have won,” she wrote.

She added, “I’m very sad about Berkeley’s cancelation, but my sadness is greater than that. It is a dark day for free speech in America,” Coulter tweeted.

“It’s sickening when a radical thuggish institution like Berkeley can so easily snuff out the cherished American right to free speech,” she said.

She concluded her series of tweets by thanking liberals Bill Maher, Chris Matthews and Margaret Carlson, who took her side in the battle.