Dzhokhar Tsarnaev - Boston Bomber

On April 15, 2013, Chechen brothers Dzhokhar Tsarnaev and Tamerlan Tsarnaev detonated two improvised bombs at the Boston Marathon, killing 3 people and injuring at least 264 others.  In an ensuing chase, an MIT policeman was shot and killed, as well as older brother Tamerlan.  Tsarnaev stands convicted on innumerable counts, and is in the penalty phase of his trial to decide whether he dies or serves life in prison.  Only Tweets have been allowed from the courtroom proceedings.