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Sierra Zulu | Communism is not an opinion, it is a promise! | Page 2
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Communism is not an opinion, it is a promise! Skip to primary content. Skip to secondary content. Sierra Zulu demands Crowd! Newer posts →. Earthmoving at TEDxVienna 2012! November 6, 2012. Earthmoving @ TEDxVienna 2012. November 1, 2012. Johannes Grenzfurthner presented Sierra Zulu at TEDxVienna 2011. He will return for TEDxVienna 2012 to give an update and screen Earthmoving. 8212; Sierra Zulu’s short film prequel (featuring Jeff Ricketts, Martin Auer). Odeon, Taborstraße 10, 1020 Vienna, Austria.