The White House made clear on Monday its intention to suppress left-wing domestic terrorism following the assassination of conservative influencer Charlie Kirk, although the motive of the alleged perpetrator remains mysterious, at least at this stage.

Charlie Kirk, 31, a figure of the American right, defended President Donald Trump and his policies to his millions of followers on social media platforms and through public appearances and speeches at U.S. universities, spreading his Christian, and traditionalist ideas, especially about family to young people, encouraging dialogue with people from the opposite side of the political spectrum.

The young man “played a major role” in securing Trump’s reelection in November 2024, said Vice President J.D. Vance on Monday while exceptionally featuring the late influencer’s popular podcast.

Stephen Miller, a close aide to President Trump, warned the left in an extremely blunt tone during the show.

“We will direct all the anger we feel against the organized campaign that led to this murder to uproot and dismantle these terrorist networks,” he said.

“This is a massive domestic terrorist movement,” he added.

The US President, who will attend a tribute event for Charlie Kirk on Sunday at a stadium in Arizona (southwest), stated that he intends to register the Antifa movement as a domestic terrorist organization.

“This is something I will do if I have the support of the people here,” the head of the U.S. state said at the White House during the signing of a presidential executive order, referring to members of his administration.

He also mentioned the possibility of using organized crime legislation to prosecute those who financially support protests against law enforcement.

The suspect

Charlie Kirk was shot in the neck while speaking at a university campus event in Utah, a tragic case that underscored the increasingly deep political divide in the U.S.

Five days later, the motives of Tyler Robinson, the 22-year-old arrested Thursday night, are still unclear.

The suspect reportedly has a leftist ideology and lived with a transgender partner. However, authorities have not announced what they consider the motive for the attack.

The alleged killer, who is not cooperating with the police investigating the case, is expected to be formally charged later today in Utah.

DNA samples found near the crime scene match the genetic material of Tyler Robinson, FBI Director Chris Wray confirmed on Monday.

In addition to the weapon used in the crime many other pieces of evidence were collected by the police, including a screwdriver at the crime scene.

“I can announce (…) that the DNA traces on the towel used to wrap the weapon and the DNA on the screwdriver match those of the suspect we currently hold,” Wray said on Fox News.

The FBI chief also said the alleged killer had hinted that he would commit the murder. “The suspect wrote, in rough terms, ‘I have the chance to kill Charlie Kirk, and I will seize it,’” he said, adding that federal authorities have “proof” of the note containing this content, although it was later destroyed.

“There seem to have been many warning signs,” Fox News quoted the FBI’s second-in-command, Dan Bonzino, referring to the note. There was clearly “intent,” he added, also noting that friends and family members testified that the suspect had recently become more “politicized.”