On the 50th anniversary of the assassination of the Rev. Martin Luther King Jr., King’s children will honor two pathbreaking human rights lawyers—Bryan Stevenson and Benjamin Ferencz—at a remembrance ceremony at 10:30 a.m. Wednesday.

King’s family will lay a wreath on the crypts of King and his wife, Coretta Scott King, at The Martin Luther King Jr. Center for Nonviolent Social Change, which King’s widow founded after his death in 1968.