T his chapter examines the role of anger, contempt, and disgust in inter-group political violence through what we have called the ANCODI hypothesis (Matsumoto, Hwang, & Frank, 2012a , 2013 ). The ANCODI hypothesis argues that anger, contempt, and disgust are a volatile emotional mix that contributes to intergroup aggression and violence through the ability of anger to motivate, of contempt to devalue others, and disgust to eliminate. We will present a series of studies that tested and found support for this by examining the emotional content of the words and nonverbal actions in the speeches given by leaders of political groups prior to events that turned violent (e.g., Hitler and Kristallnacht in 1938) and events that did not turn violent (e.g., Gandhi’s ‘salt march’ in 1930). We propose that this volatile mix may help account for the ‘dehumanization’ process present with political violence.