The anti-nuclear movement in Germany has a long history dating back to the early 1970s when large demonstrations prevented the construction of a nuclear plant at Wyhl. The Wyhl protests were an example of a local community challenging the nuclear industry through a strategy of direct action and civil disobedience. Police were accused of using unnecessarily violent means. Anti-nuclear success at Wyhl inspired nuclear opposition throughout Germany, in other parts of Europe, and in North America. A few years later protests raised against the NATO Double-Track Decision in Germany and were followed by the foundation of the Green party. In 1986, large parts of Germany were covered with radioactive contamination from the Chernobyl disaster and Germans went to great lengths to deal with the contamination. Germany's anti-nuclear stance was strengthened. From the mid-1990s onwards, anti-nuclear protests were primarily directed against transports of radioactive waste in "CASTOR" containers. In September 2010, German government policy shifted back toward nuclear energy, and this generated some new anti-nuclear sentiment in Berlin and beyond. On 18 September 2010, tens of thousands of Germans surrounded Chancellor Angela Merkel's office. In October 2010, tens of thousands of people protested in Munich. In November 2010, there were violent protests against a train carrying reprocessed nuclear waste. Within days of the March 2011 Fukushima Daiichi nuclear disaster, large anti-nuclear protests occurred in Germany. Chancellor Angela Merkel promptly "imposed a three-month moratorium on previously announced extensions for Germany's existing nuclear power plants, while shutting seven of the 17 reactors that had been operating since 1981". Protests continued and, on 29 May 2011, Merkel's government announced that it would close all of its nuclear power plants by 2022. Galvanised by the Fukushima nuclear disaster, first anniversary anti-nuclear demonstrations were held in Germany in March 2012. Organisers say more than 50,000 people in six regions took part. Early years German publications of the 1950s and 1960s contained criticism of some features of nuclear power including its safety. Nuclear waste disposal was widely recognized as a major problem, with concern publicly expressed as early as 1954. In 1964, one author went so far as to state "that the dangers and costs of the necessary final disposal of nuclear waste could possibly make it necessary to forego the development of nuclear energy". In the early 1960s there was a proposal to build a nuclear power station in West Berlin, but the project was dropped