The second Klan is founded by William Simmons in Georgia. It is spreading throughout the South and particularly into Indiana. Its goals are to oppose "non-whites", including Blacks, Catholics, Jews, and Eastern Europeans.
A group of anarchists supporting the insurrectionist Luigi Galleani mail 28 bombs to a wide variety of government officials and prominent business leaders across the country. The housekeeper and wife of Senator Thomas Hardwick are severely injured while opening one of the packages. In June, nine more much larger bombs are detonated at the homes of other officials, as well as the Our Lady of Victory Catholic Church in Philadelphia. One night watchman and one of the bombers are killed.
Agents of the Baldwin-Felts Detective Agency hired by the Stone Mountain Coal Company are ambushed in the town of Matewan, West Virginia, after they evicted several famlies of coal miners and attempted to arrest the town's sheriff. Seven detectives were killed along with two miners and the town's mayor.