At the Charlie Kirk memorial, President Trump spoke bluntly about left-wing violence, declaring, “The violence comes largely from the left.”
He described Antifa attacks on protesters and events, adding, “Many of these people are paid agitators. When you see they all have the same beautifully printed sign, every sign is identical. It comes out of a top-level print shop. That’s not the kind of sign made in somebody’s basement. Those are paid for by very bad people, and hopefully we are going to be finding out through the DOJ who those people are.”
Trump has vowed to designate Antifa and other groups promoting left-wing violence as terrorist organizations. In theory, such a designation would make it easier for the Department of Justice to bring charges against those who finance them. The problem, however, is that under U.S. law there is no mechanism to label domestic groups as terrorist organizations. The Foreign Terrorist Organization designation applies to international groups such as Hamas or MS-13, but no equivalent exists for domestic organizations.
The primary barrier is constitutional. First Amendment protections prevent the government from banning or criminalizing organizations based solely on beliefs, speech, or associations, even extremist ones. In Brandenburg v. Ohio (1969), the Supreme Court ruled that speech can only be restricted when it incites “imminent lawless action.” This precedent has made it extremely difficult for lawmakers to treat domestic extremist groups the same way they treat foreign terrorist organization