The event honouring conservative activist Charlie Kirk at a Phoenix Arizona football stadium was a swirling mix of memorial service, big-church Christian religious revival and conservative political rally.

It also provided a glimpse of a Republican Party at a fork in the road, weighing a choice between forgiveness and retribution; reconciliation and conflict.

The leading lights of Donald Trump's Make America Great Again coalition gathered for an hours-long celebration of Kirk's life, which included music and plenty of speeches.

Here is what it may reveal about the future of the movement.

Despite the string of prominent politicians speaking on Sunday night, the defining moment came when Erika Kirk, Charlie's widow, took the stage. The 36-year-old former beauty contestant, podcaster and businesswoman took the opportunity to preach unity - including forgiveness for her husband's killer.