Hackers lit up the Green Building with a ribbon on Tuesday night, in honor of the 1-year anniversary of the Boston Marathon bombings and the death of MIT Officer Sean Collier. Landon Y. Carter—The Tech May. 9, 2016 Facebook Twitter Reddit Print Hackers lit up the Green Building with a ribbon on Tuesday night, in honor of the 1-year anniversary of the Boston Marathon bombings and the death of MIT Officer Sean Collier. Landon Y. Carter—The Tech