Bowling for Columbine is a documentary by Michael Moore in which he explores the roots of America's gun violence. Within the documentary itself Michael Moore uses techniques to present reality in the way he wants it to be seen.
For example the way in which he displays the interviews with people- for starters the people he has chosen to interview are obviously either eccentric, exciting people who are going to react to the camera and put on a show or clearly are going to have a strong view that he is opposed to- to try to get across the reaction he wants us to see and for us to believe that this is the opinion of everyone within that group rather than just the indiciuals views.
Michael Moore has also clearly changed parts of the film- such as when Charlton Heston is walking away he displays P.O.V shots when there was clearly no camera man infront or behind him. Meaning that he has gone back and filmed these scenes to make it seem more dramatic such as in a movie, this is obviously a warp on relatity and trying to make the audience sympathsise and believe the issues he wants us to believe.
Also for the first rough cut of the film there was around 6 hours of footage, this means that Moore has taken scenes and edited interviews to make the audience believe what is happening is true. Where infact he has taken facts that he wants us to think and made it into a cineamtic way and the more you think about the- the more you cannot trust is actually facts and what has been changed to try to make us alter the way we think.