On this day in 1864, a group of radicals from France, Germany, Italy, Poland and Britain met in London and formed an international worker's association known as the "First International," to help unite the world's workers in revolution.
On this day in 2003, the United States rejoined the United Nations Educational, Scientific and Cultural Organization after a 19-year hiatus.
On this day in 2008, a human stampede at a Hindu temple in western India killed 149 people as more than 25,000 worshipers tried to reach the temple located on a hilltop through a narrow pathway.