(AP) — President Donald Trump and prominent members of his “Make America Great Again” movement will pay tribute Sunday to conservative activist Charlie Kirk, whose slaying has marked a signal moment in America’s fraught political atmosphere.

The memorial service for Kirk, whom Trump credits with playing a pivotal role in his 2024 election victory, is expected to draw tens of thousands of mourners, including Vice President JD Vance, senior White House officials and young conservatives shaped by the 31-year-old firebrand.

“We’re going to celebrate the life of a great man today,” Trump told reporters as he left the White House on Sunday morning to make his way to Arizona for the service. “It will be a tough day.”

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