Here are some amazing artistic silent films with no dialogue about how out of balance our life is and how mechanized and artificial society has become, and the toll its taken on us. They are considered masterpieces and speak for themselves. Very meaningful and worth watching. I'm not going to embed them below because you should watch them on a full screen at the links below.
Koyaanisqatsi (1982) - Shows the madness and mechanization of industrial society and the toll its taken on us. Filmed within the US. Considered a masterpiece. "Koyaanisqatsi" is a Hopi Indian word that means "life out of balance".
http://vimeo.com/41224179
Baraka (1992) - Spectacular scenes from many different countries and cultures showing natural life vs. industrial and the toll its taken on us.
http://www.youtube.com/watch?v=xz-nPGPT9Fc&wide
Powaqqatsi (1988) - An exploration of technologically developing nations and the effect the transition to Western-style modernization has had on them.
http://vimeo.com/41224705
Naqoyqatsi (2002) - A visual montage portrait of our contemporary world dominated by globalized technology and violence.
http://www.youtube.com/watch?v=hWnPY8kYuDo&wide
Home (2009) - This one has dialogue, but contains breathtaking scenes. With aerial footage from 54 countries, Home is a depiction of how the Earth's problems are all interlinked.
http://www.youtube.com/watch?v=jqxENMKaeCU&wide
Earthlings (2005) - This disturbing documentary film is guaranteed to turn anyone into a vegetarian! Using hidden cameras and never-before-seen footage, EARTHLINGS chronicles the day-to-day practices of the largest industries in the world, all of which rely entirely on animals for profit.
http://www.youtube.com/watch?v=19eBAfUFK3E&wide