These are not simple issues. These are the kinds of events that shock the conscience of humankind, but so far we have proven that we are not willing or capable of stopping them.
This book is an exploration of how 'normal citizens' can take part in an extermination of people who were once their neighbors.
Once the government told people it was their duty to go out and attack neighbors, it happened very quickly. It kind of snowballed. People committed violence and wanted others to do the same thing, and a kind of group conformity swept through.