Today in history: On May 15, 1970, less than two weeks after the shooting at Kent State University, two Black students at Jackson State College in Mississippi were killed and 12 were injured when police opened fire during student demonstrations. Also on this date: In 1800, President John Adams ordered government offices to relocate from Philadelphia to the newly-constructed city of Washington, in the federal District of Columbia. In 1862, President Abraham Lincoln signed an act establishing the