Last Moments Alive on Instagram: "On April 15, 2013, thousands packed Boylston Street as runners closed in on the Boston Marathon finish line. At 2:49 p.m., two homemade pressure-cooker bombs detonated twelve seconds apart, killing three people and injuring more than 260. Chaos erupted instantly as smoke filled the street and first responders fought to save lives. The attack triggered a massive manhunt that shut down the entire city, ending days later after one suspect was killed and the other c

History on Instagram: "On April 15, 2013, two pressure-cooker bombs detonated near the finish line of the Boston Marathon at 2:49 p.m., killing three people and injuring an estimated 264 others. The attack, which occurred on Patriots’ Day, transformed a celebratory sporting event into a scene of chaos and tragedy. The victims who died at the scene were 8-year-old Martin Richard, 23-year-old Lu Lingzi, and 29-year-old Krystle Campbell. MIT police officer Sean Collier was also killed days later du