In 1931, a sexologist arrived in colonial Shanghai to give a public lecture about homosexuality. In the audience was a medical student. The sexologist, Magnus Hirschfeld, fell in love with the medical student, Li Shiu Tong. Li became Hirschfeld's assistant on a lecture tour around the world. Racism and the Making of Gay Rights shows how Hirschfeld laid the groundwork for modern gay rights, and how he did so by borrowing from a disturbing...