Has it really been 50 years since JFK's inauguration?  On January 20, 1961  President John F. Kennedy challenged a  new generation of Americans" to "ask not what your country can do for you — ask what you can do for your country."

The president's daughter, Caroline Kennedy, members of his administration, civil rights activisits and even part of the first class of the Peace Corp -- which JFK established -- will commemorate the occasion in Washington D.C. today.

Caroline  told The Associated Press that she has been thinking over her father's oft-quoted inaugural speech on Jan 20, 1961, when he proclaimed that Americans "shall pay any price, bear any burden, meet any hardship, support any friend, oppose any foe, in order to assure the survival and the success of liberty."

"I think he really expanded and redefined our idea of what it means to be a citizen — that everybody has something to contribute and everybody has something to give back to this country that's given us so much," Caroline Kennedy said. "It's not just an obligation, but it's really a rewarding experience and really a belief in government and politics as a noble profession."