COLUMBIA, S.C. (AP) — Civil rights movement veterans and U.S. Reps. Jim Clyburn and John Lewis will lead more than two dozen members of Congress on a three-day history and race relations tour of South Carolina, culminating Sunday with services at the Charleston church where nine black parishioners were gunned down last June.

The event comes during the vitriolic and sometimes violent presidential campaign season that has seen blacks and whites face off at rallies for Republican Donald Trump. Just 150 miles away, a white Trump supporter was captured last week on video punching a black protester who was being escorted from a North Carolina rally.

Both Democrats and Republicans are part of the civil rights tour, including GOP South Carolina Sens. Tim Scott and Lindsey Graham, a one-time candidate for president.

Organizers hope the Pilgrimage to South Carolina that starts Friday will be an exercise in forgiveness and strength in a state whose reaction to last summer's violence at Emanuel AME Church has been held out by some as a model of how to handle racially charged situations.

After the June 17 slayings — in which the suspect is a white man who had expressed support for white supremacy and the Confederate flag — relatives of the nine people killed expressed forgiveness for Dylann Roof, with some saying they would pray for him. Gov. Nikki Haley has frequently expressed pride at how the state didn't devolve into riots, like other places have experienced after shootings in the past two years, but instead came together in peace and support.

The Faith and Politics Institute has held such bipartisan events in five southern states since 1998.

Clyburn is the first black congressman from South Carolina since Reconstruction, and Scott is the first black U.S. senator from the Deep South since Reconstruction. Lewis, a veteran of the civil rights movement of the 1960s, suffered a skull fracture during the march in Selma, Alabama, more than a half-century ago.

Taking a break from partisan politics in the contentious presidential election year, the group is visiting churches in the Columbia area as well as the site of the Orangeburg Massacre where three students were killed during a protest of a segregated bowling alley in 1968. They will also discuss the effect of the Charleston church shootings and worship at Emanuel AME on Sunday.