The threat of violence from Antifa has resulted in the cancellation of a film premiere set to expose that very same organization.

The documentary produced by the Capital Research Center—called America Under Siege: Antifa—was scheduled to premiere Monday at Milo Yiannopoulos’ now-cancelled “Free Speech Week” at the University of California, Berkeley.

"Let’s be clear: Antifa shut down a film screening criticizing their own extremism by using fear."

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While Yiannopoulos made a brief appearance on campus Sunday afternoon, his highly-anticipated four-day tribute to the First Amendment was gradually called off after allegedly facing a series of bureaucratic roadblocks.

In fact, the student organization sponsoring Free Speech Week, The Berkeley Patriot, has filed a civil rights complaint against the administration, alleging that it was “systematically and intentionally violating” its First Amendment rights, according to The Daily Californian.

As a result, The Patriot was forced to pull its sponsorship of the event, leaving Yiannopoulos and his free-speech extravaganza at the wayside, with America Under Siege: Antifa among the casualties.

Although the film will still premiere Tuesday night on the One America News Network, the Capital Research Center published a Saturday press release expressing its extreme disappointment with the cancellation.

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“The disruption of the film’s premiere is extremely disappointing. Worse, it is a major blow to the First Amendment right to free speech,” the group stated. “Let’s be clear: Antifa shut down a film screening criticizing their own extremism by using fear.”

The film, notably, is the third in a series produced by the Capital Research Center exposing “Marxist groups” who are “intent on destroying individual freedom in the United States.”

Follow the author of this article on Twitter: @AGockowski