On this day: September 6

Published On: Sep 05 2012 11:21:24 PM CDT   Updated On: Sep 06 2015 01:00:00 AM CDT

A president is shot, Cal Ripken Jr. breaks an unbreakable record, and the world mourns the passing of a princess, all on this day.

OTD September 6 - Howard Unruh
25 / 33
Courtesy of Philadelphia Inquirer

1949: Howard Unruh, a former World War II sharpshooter, kills 13 neighbors in Camden, New Jersey, with a souvenir Luger, becoming the first U.S. single-episode mass murderer.

Upload Photos / Videos