1934 – Oskaloosa, Iowa, becomes the first municipality in the United States to fingerprint all of its citizens.
1951 – The opening of the Ninth Street Show, otherwise known as the 9th Street Art Exhibition: A gathering of a number of notable artists, and the stepping-out of the post war New York avant-garde, collectively known as the New York School.
1979 – White Night riots in San Francisco following the manslaughter conviction of Dan White for the assassinations of George Moscone and Harvey Milk.
2011 – Radio broadcaster Harold Camping predicted that the world would end on this date.
2014 – The National September 11 Museum opens to the public.
