Former President Barack Obama sharply criticized how President Donald Trump and his allies have responded to the killing of conservative commentator Charlie Kirk, saying the episode is being weaponized to stoke political division and silence opponents.

"When I hear not just our current president, but his aides, who have a history of calling political opponents 'vermin,' enemies who need to be 'targeted,' that speaks to a broader problem that we have right now, and something that we're going to have to grapple with — all of us," Obama said at the Jefferson Education Society's 17th Global Summit in Erie, Pennsylvania. He called Kirk's murder "horrific and a tragedy" and said Americans must be able to debate controversial ideas without fear.

The remarks came after Charlie Kirk, 31, was fatally shot while speaking to students at Utah Valley University last week. Authorities charged 23-year-old Tyler Robinson with murder on Tuesday; prosecutors say Robinson confessed in text messages to a romantic partner that he shot Kirk because he had "enough of his hatred." Robinson now faces possible capital punishment.

President Trump and allies have characterized a recent rise in political violence as driven by the "radical left," and the administration has threatened a series of executive actions targeting left-wing groups, including moves to designate Antifa as a domestic terrorist organization and to revoke tax-exempt status for certain nonprofit organizations. Utah Gov. Spencer Cox said investigators believe Robinson held a "leftist ideology."

Obama — who did not mention Trump by name during the remarks — said the reaction to Kirk's death illustrates a broader problem in public discourse. "Whether we're Democrats, Republicans, independents, we have to recognize that on both sides, undoubtedly, there are people who are extremists and who say things that are contrary to what I believe are America's core values," he said.

He contrasted the current tenor with what he described as bipartisan commitments to unity from other Republican leaders, saying he believed former Presidents George W. Bush, and past rivals John McCain and Mitt Romney, shared a duty to bring the nation together. "What I'm describing is not a Democratic value or Republican value. It is an American value," Obama added, and said the presidency carries a responsibility "to pull people together."

The White House dismissed Obama's comments. White House spokeswoman Abigail Jackson said the former president had "used every opportunity to sow division and pit Americans against each other," adding that Obama had inspired Democrats to "slander their opponents" and suggesting he should admonish his own party if he truly cared about unity.

Investigators say Robinson shot Kirk in the neck during a campus event. Prosecutors have released excerpts of text messages they say show Robinson's intent and motive; court filings and arrest records indicate he was charged with murder and faces capital punishment. Local and federal officials are continuing their investigation into the attack and any broader threats.

The killing has intensified debate over political rhetoric, public safety at campus events and the responsibilities of elected officials and public figures. As prosecutors move forward with criminal charges, elected leaders and commentators across the political spectrum have called for calm and condemned violence, even as they dispute broader political narratives about who bears responsibility for the climate of political hostility.