Baidu Inc, the Chinese Internet company, on Thursday won the dismissal of a U.S. lawsuit by pro-democracy activists who complained that Baidu illegally suppressed their political speech from Chinas most widely used Internet search engine. Eight New York writers and video producers had accused Baidu of calibrating its search engine to block users in the United States from viewing articles, videos and other information advocating greater democracy in China. U.S. District Judge Jesse Furman in Manhattan, however, concluded that the results produced by Baidus search engine constituted protected free speech under the U.S. Constitution.