Sean Allen Collier

In the tense aftermath of the 2013 Boston Marathon bombing, Sean Allen Collier, a 26-year-old White male Massachusetts Institute of Technology police officer, was killed in the line of duty. On the night of April 18, 2013, Collier was ambushed and shot multiple times while sitting in his patrol car on the Cambridge campus. His death marked a pivotal moment in the sprawling manhunt for the two suspects responsible for the marathon bombings, brothers Dzhokhar and Tamerlan Tsarnaev.

Sean Col ...