Humanity at its Worst is not a handbook for prevention but rather a research driven summary of one of the most disturbing features of the 20th and 21st centuries. Its intent is to provide a basis for understanding of these incomprehensible crimes against humanity. The catalogue is large, disturbing, and troublesome. It is dedicated entirely to assisting readers understand the circumstances of people across the world who must contend with these extreme inhuman actions. Each chapter examines numerous factors including the conditions of the victims, the number of such incidents, the loss of lives, the conditions of women, and children past records of major incidents of this kind. The accounts of genocides examine the differing interpretations of genocide from legal viewpoints, as well as analyzing the influence of race, ethnicity, nationalism, and gender.