Bloc 8406 (Vietnamese: Khối 8406) is a Catholic-led unified coalition of political groups in Vietnam that advocates for democracy reforms in Vietnam. It is named after the date of the group's Manifesto on Freedom and Democracy for Vietnam 2006 (Vietnamese: Tuyên Ngôn Tự Do Dân Chủ Cho Việt Nam 2006) declaring the need for democratic reforms in Vietnam. The manifesto was issued on 8 April 2006 and was signed by 118 dissidents calling for a multiparty state. The support later grew into the thousands.
Notable Bloc 8406 members
Lawyer and labor activist Tran Quoc Hien was accused of being a part of Bloc 8406 in his 2007 trial that led to a five-year prison sentence for "endangering state security". He also posted articles critical to the government online, such as "The Tail", a description of life under government surveillance.
Former Communist Party official Vi Duc Hoi joined the Bloc after leaving the party in 2007. He was imprisoned in 2011 for "spreading anti-government propaganda" after posting copies of pro-democracy articles online.
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