Dzhokhar and Tamerlan Tsarnaev

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 Anwar al-Awlaki. They also used instructions published by AQAP to create the pressure cooker bombs used in the attack. In the subsequent manhunt, Tamerlan was killed while Dzhokhar was able to escape. He was later captured on April 19 and was convicted of 30 counts, including four counts of murder and one count of using and conspiring to use a weapon of mass destruction, on April 8, 2015. He was sentenced to death on June 24, 2015.