Thirty years ago, as communism crumbled across Europe, more than one million Chinese protesters gathered in Tiananmen Square in Beijing to demand greater political rights and more government accountability. After more than a month of rising demands and growing crowds, the Communist Party of China unleased a violent crackdown, killing hundreds, possibly thousands of Chinese citizens.    To mark this 30-year anniversary, CSIS’s Project on History and Strategy invites you to a discussion with Dr. Andrew J. Nathan of Columbia University, a leading scholar of Chinese politics and the sources of political legitimacy in Asia. Dr. Nathan will discuss the history of Tiananmen and explain how the legacy and lessons of 1989 have shaped Chinese politics over the past three decades.   Dr. Nathan is the author of several books on culture, rights and political participation in China and Asia more broadly. This event is made possible by general support to CSIS.