Bowling for Columbine

Directed by Michael Moore:
The film explores what Moore suggests are the causes for the Columbine High School massacre and other acts of violence with guns. Moore focuses on the background and environment in which the massacre took place and some common public opinions and assumptions about related issues. The film looks into the nature of violence in the United States.

In Moore's discussions with various people – including South Park co-creator Matt Stone, the National Rifle Association's then-president Charlton Heston, and musician Marilyn Manson – he seeks to explain why the Columbine massacre occurred and why the United States has a high violent crime rate (especially crimes involving guns), and promotes the fact that such crime in the U.S. is relatively higher than in other developed nations.

English version: Here