Rapha l Lemkin (1900-1959) coined the word "genocide" in the winter of 1942 and led a movement in the United Nations to outlaw the crime, setting his sights on reimagining human rights institutions and humanitarian law after World War II. After the UN adopted the Convention on the Prevention and Punishment of the Crime of Genocide in 1948, Lemkin slipped into obscurity, and within a few short years many of the same governments that had agreed to...