A Chinese court sentenced a prominent dissident to 11 years on Friday - the longest term ever handed down for subversion charges, according to rights groups that say it signals the government will take an increasingly hard line against activists in the year ahead. The sentencing of Liu Xiaobo, after he called for sweeping political reforms and an end to Communist Party dominance, also drew diplomatic criticism, with the United States saying it went against international norms. Liu was the co-author of an unusually direct appeal for political liberalization in China called Charter 08. He was detained just before it was released last December. More than 300 people, including some of China's top intellectuals, signed it. The verdict was issued at the No. 1 Intermediate People's Court in Beijing after a two-hour trial Wednesday in which prosecutors accused Liu of “serious” crimes. The vaguely worded charge of inciting to subvert state power is routinely used to jail dissidents. Liu could have been sentenced for up to 15 years in prison under the charge. A San Francisco-based human rights group, the Dui Hua Foundation, said it was the longest sentence that it knew of since the crime of inciting subversion was established in 1997. The state-run Xinhua news agency only reported the news in English – a sign the government does not want its people to know about Liu's case.