"White supremacists, anti-government extremists, radical Islamist extremists, and other ideologically inspired domestic violent extremists have been active in the United States for decades. Examples of attacks include the 1993 World Trade Center bombing by radical Islamists, in which 6 persons were killed; and the 1995 Oklahoma City bombing of the Alfred P. Murrah federal building by anti-government far right individuals, in which 168 lives were lost. The September 11, 2001, attacks account for the largest number of fatalities in the United States in a single or closely- related attack resulting from violent extremism in recent decades. While the September 11, 2001, attacks were perpetrated by foreign violent extremists, from September 12, 2001 through December 31, 2016, attacks by domestic or “homegrown” violent extremists in the United States resulted in 225 fatalities, according to the ECDB. Of these, 106 were killed by far right violent extremists in 62 separate incidents, and 119 were victims of radical Islamist violent extremists in 23 separate incidents. Figure 1 shows the locations and number of fatalities involved in these incidents. A detailed list of the incidents can be found in appendix II. According to the ECDB, activities of far left wing violent extremist groups did not result in any fatalities during this period."