In May 2010, some 25,000 people, including members of peace organizations and 1945 atomic bomb survivors, marched for about two kilometers from downtown New York to the United Nations headquarters, calling for the elimination of nuclear weapons. 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 an anti-nuclear demonstration that organisers said was the biggest of its kind since the 1986 Chernobyl disaster. In October 2010, tens of thousands of people protested in Munich against the nuclear power policy of Angela Merkel's coalition government. The action was the largest anti-nuclear event in Bavaria for more than two decades. In November 2010, there were violent protests against a train carrying reprocessed nuclear waste in Germany. Tens of thousands of protesters gathered in Dannenberg to signal their opposition to the cargo. Around 16,000 police were mobilised to deal with the protests.