The views on Marxism in this book reflect foreign left-wing scholars, Marxists and socialist researchers' attitudes towards the new social and political issues in today's world. This book is a subproject of the "211 Project" in the "10th Five-year Plan" period. It was undertaken by the School of Marxism Studies, Renmin University of China. This subproject was completed by a team. The division of their work is as follows: Duan Zhongqiao: "The Exploitation Theory of John E. Roemer" and "Studies on Socialism and Democratic Politics"; Zhou Xincheng: "Capitalist Crisis Theory by Ecological Marxism"; Zeng Zhisheng: Preface, "Studies on Future Socialism", "Baudrillard's Critique on Marxist Economics", "Issues about Post-modern Feminism and Marxism" and "Issues of Modernity, Post-modernity and their Relations with Marxism"; Huang Jifeng: "The Latest Debate of American and British Marxists on Market Socialism"; Gao Yachun: "Studies on New Imperialism"; Wang Miao: "Color Revolutions".