Investigators, meanwhile, strengthened their case against suspect Tyler Robinson, 22, citing DNA evidence and a destroyed note detailing plans to kill the activist.

At the White House, Vice President JD Vance hosted a Charlie Kirk tribute podcast with conservative allies, vowing alongside staffers to confront extremist networks blamed for the attack.

On Instagram on September 14, Bieber posted a photo of a framed list of values from the home he shares with his wife, Hailey Bieber, and their son Jack Blues.

The list highlights principles like prioritizing rest, valuing and “physical wellness as an act of stewardship,” and respecting “human dignity and eternal worth.”

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However, the post drew mixed reactions due to the current state of things in the U.S. after the assassination of Conservative activist Charlie Kirk.

Some followers criticized the Canadian pop star for not commenting on Kirk’s death, with one writing, “Christian? Yeah, I don’t think so. Don’t be afraid to speak up in support of Charlie.”

Another added, “Nice post, but super disappointed in the obvious silence.”

A third pleaded to Bieber to speak about Kirk’s murder, saying, “Sad that you’ve not mentioned the juice lost of a fellow brother in Christ-Charlie Kirk. A brother who only wanted to spread truth and try to work out the differences between the right and the left sides. God bless the memory of Charlie Kirk!”

Amid backlash, several fans defended the “Peaches” singer, arguing that celebrities are not obliged to weigh in.

One user wrote, “Why does everyone think a celebrity has to speak about Charlie Kirk like he was the president or something?”

Another said, “You people leave this man alone! Love your family values, Justin.”

A third asked, “Why does anyone think he has some obligations to talk about Charlie Kirk? They aren’t besties, and it has nothing to do with him.”

Meanwhile, celebrities across the political spectrum have made calls for unity in the wake of Kirk’s assassination.

Arnold Schwarzenegger, the former Republican governor of California, shared a message on X urging Americans to reject extremism.

“My heart is with Charlie Kirk’s family, and with the United States,” he wrote on X. “Politics has become a disease in this country, and it’s deadly. But don’t listen to the pessimists who say there is no cure. There is a cure. It is inside of us.”

He added, “This is a horrible tragedy. May it also be a moment for everyone to rediscover their humanity.”

Actor Josh Duhamel echoed the sentiment on Instagram, posting a photo of Kirk with his wife and children.

“RIP Charlie Kirk,” he wrote. “Please remember, no matter what your political beliefs, that this man had a wife and 2 beautiful children who no longer have him. Please pray for this madness to stop.”

As tributes for Kirk continue, investigators say the case against his accused killer is stronger.

22-year-old Tyler Robinson was arrested on suspicion of aggravated murder, felony discharge of a firearm, and obstruction of justice. He is being held without bail, with formal charges expected in the coming days.

According to reports, FBI Director Kash Patel also revealed on “Fox & Friends” that forensic teams matched Robinson’s DNA to both a towel wrapped around the bolt-action rifle believed to have been used in the shooting and a screwdriver recovered from a rooftop vantage point near the scene.

Patel confirmed that investigators uncovered evidence of a destroyed note at Robinson’s residence, in which the suspect allegedly wrote of his plan to “take out Charlie Kirk.”

While a motive has not been publicly established, officials say the writings indicate intent before the fatal attack at Utah Valley University last week.

It’s “basically saying… ‘I have the opportunity to take out Charlie Kirk,’ and I’m going to take it that note was written before the shooting,” Patel said, adding that, “even though it has been destroyed, we have found forensic evidence of the note.”

Vice President JD Vance hosted a special tribute edition of Kirk’s daily podcast from the White House on Monday, bringing together conservative figures and former Trump administration aides to honor the late activist, a longtime ally of the president.

“One of Charlie’s gifts was not talking at you, but engaging you where you were,” White House Chief of Staff Susie Wiles said during the broadcast.

Vance, who was personally close to Kirk, also addressed listeners directly, denouncing those he said were downplaying or excusing the shooting.

“I’m desperate for our country to be united in condemnation of the actions and the ideas that killed my friend,” he said, but “there is no unity with the people who celebrate Charlie Kirk’s assassination, and there is no unity with the people… who pay the salaries of these terrorist sympathisers.”