US President Trump Designates Antifa Movement a 'Major Terrorist Organisation'

18 September, 2025

U.S. President Donald Trump announced he is designating the left-wing, anti-fascist Antifa movement as a "major terrorist organisation." The move follows the recent assassination of right-wing political activist Charlie Kirk. It is unclear how the U.S. administration will apply the designation to what is a decentralised movement rather than a structured organisation. Critics, including Trump's former FBI Director, have previously stated that Antifa is an ideology, not a formal group, posing legal challenges to such a classification.

Unpacked:

What is Antifa, and how is it organized in the United States?

Antifa is a left-wing, anti-fascist movement in the U.S. composed of loosely connected autonomous groups and activists, not a centralized or hierarchical organization. Its structure is highly decentralized, making it difficult to define or target as a single entity.

What legal challenges does the U.S. government face in designating Antifa as a terrorist organization?

U.S. law only allows the federal government to designate foreign organizations as terrorist groups. Since Antifa is domestic and lacks formal structure, legal experts argue that such a designation would be unconstitutional and raise First Amendment and due process issues.

Has Congress previously taken action or debated the designation of Antifa as a terrorist organization?

Yes, there have been congressional resolutions and proposals calling for Antifa to be designated as a domestic terrorist organization. However, these have not resulted in formal legal designation or changes to U.S. law regarding domestic groups.

What is the historical context behind political efforts to label Antifa as a terrorist group?

Efforts to label Antifa as a terrorist group gained prominence during the Trump administration, especially after violent protests and confrontations with right-wing groups. Officials cited increased activity and clashes, but also faced criticism for targeting a loosely defined movement rather than structured organizations.