This book present a new theory of ethnic cleansing based on the most terrible cases _colonialgenocides, Armenia, The Nazi Holocaust, Cambodia, Yugoslavia and Rwanda- and case of lesser violence- early modern Europe,contemporary India and Indonesia. Murderous cleansing is modern- it is "the dak side of Democracy" It Result where the demos (democracy) is confused with the ethnos (the ethnic group). Danger arises where two rival ethnonationalmovement each claims " its own" state over the same territory. Conflict escalates where either the weaker side fight rather tahn submit because of aid from outside or the stronger side believes it can deploy sudden, overwhelming force.