Domestic extremism refers to extremist movements, groups, networks and individuals originating in the United States (as opposed to operating in the U.S. at the behest of foreign extremist organizations), as well as criminal or violent acts they... Read more

Dzhokhar and Tamerlan Tsarnaev were domestic terrorists who committed the Boston Marathon bombing on April 15, 2013. The Kyrgyz-American brothers were radicalized in part by the lectures of Al Qaeda in the Arabian Peninsula's (AQAP) extremist cleric... Read more

Extremism is a concept used to describe religious, social or political belief systems that exist substantially outside of belief systems more broadly accepted in society (i.e., "mainstream" beliefs). Extreme ideologies often seek radical changes in the nature... Read more