In Memoriam is one of the most vital documents to emerge after the events of September 11, 2001. Compiled from over 100 sources, this collage of audio, video, and photography will provoke tears, anger, and grief all over again... so why watch it? The title states the purpose: as disturbing as some of these images are, they are also bursting with tenacious and inspiring humanity, bolstered by the wisdom of New York City's then-mayor Rudolph Giuliani, who recalls--along with his executive staff--the horrendous events of 9/11 as he entered the chaos of Ground Zero.