Michael Moore is the person you refer to. The "documentary" he won an award for is a screed against the NRA and Charlton Heston, and is full of lies and inaccuracies (see
http://www.hardylaw.net/Truth_About_Bowling.html ). He is a left-wing radical political activist who has also brought us such fine works of art as "Roger & Me" (about how GM layoffs and plant closures affected his hometown) and "Stupid White Men" (about how Bush "stole the election" and should be removed by the United Nations).
Quite a character, what I would call an "America hater"
-Sam