After the assassinations of President John F. Kennedy and Senator Robert F. Kennedy, the next generation of Kennedys—the children of JFK, RFK, their brother, Senator Edward Kennedy, and his three siblings Eunice, Jean, and Pat—would bear the weight of triumph and tragedy as they sought new ways to serve their country. Here is the widowed Jackie and her children, John and Caroline, at the President’s gravesite in Arlington on May 27, 1964, the day he would have turned forty-seven. (United States Army Corp of Engineers, Public Domain)