Donald Trump and other prominent conservative figures are expected to attend the service paying tribute to the Republican podcaster.

The "Building a Legacy, Remembering Charlie Kirk" memorial service is scheduled to start at 11 a.m. local time in Glendale, Arizona on Sunday, Sept. 21, — according to the fightforcharlie.com website.

Speakers at Charlie Kirk’s memorial service mixed calls for unity and retribution in their speeches, with many referring to Kirk as a "martyr."