Tense, relentless and difficult to watch at times, Alejandro Gonzalez Inarritu's "Babel" is an emotionally shattering drama in which a simple act of kindness leads to events that pierce our veneer of civilization and bring on the white noise of terror. Inarritu and screenwriter Guillermo Arriaga involve six families, most of them not known to one another, in four countries on three continents in their story of random fate and the perils of being unable to communicate. Brad Pitt, Cate Blanchett and Gael Garcia Bernal give committed ensemble performances alongside seasoned character performers and non-actors as the story ranges from Morocco to San Diego to Tokyo.

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