Michele Obama keynotes 100-days to Rio Olympic Games NYC party

First Lady Michelle Obama and fencer Ibithaj Muhammadin participate in a fencing demonstration during the U.S. Olympic Committee 100 day countdown event to the Rio 2016 Games at Times Square. (Photo: Robert Deutsch/USA TODAY)

US first lady Michelle Obama launched a 100-days from the Rio Olympics street party on Wednesday featuring more than 75 Olympians in an interactive carnival on two blocks of teeming Times Square.

Obama, who developed the Let's Move program to address the problem of child obesity, hailed the U.S. Olympians as role models and joined in demonstrations of basketball and fencing in the slender island that runs between Broadway and 7th Avenue.