On CBS News, Jeff Greenfield filed a report about the Kennedy legacy:
We stand today at the edge of a New Frontier. The frontier of the 1960's a frontier of unknown opportunities and perils - a frontier of unfulfilled hopes and threats," said John F. Kennedy in 1960.
Those images include a memorable inaugural, at which he said: "Ask not what your country can do for you; ask what you can do for your country."
And a White House impossibly young and glamorous. Then there are the other ineradicable memories. It was at the 1964 Convention, Robert Kennedy paid tribute to his fallen brother John.
"I realize that as an individual even more importantly, for our political party and for the country that we can't just look to the past, but we must look to the future," Robert Kennedy said.
Four years later, Ted Kennedy was paying tribute to the murdered Robert.
In 1969, came the death of a young woman in a car accident with Ted Kennedy at the wheel.
Lingering memories of that helped doom Ted Kennedy's 1980 effort to take the Democratic nomination away from the President Carter. But at that convention, Kennedy's speech became a rallying cry for the liberal foot soldiers of the party. "The work goes on, the cause endures, the hope still lives, the dream shall never die," he said. But beyond the personal triumphs and losses, there is another story - the political legacy of the Kennedys that began a generation earlier than most of us realize, and that shaped, and reflects, the modern history of the Democratic Party.