The second part of this book is about the beginning of the Independent State of Croatia , the active support of the Roman Catholic clergy to this state , and their involvement and support in the extermination and\/or forceful conversion of the Serbs and extermination of the Jews and the Roma people . The second part of this book focuses on the establishment of the Independent State of Croatia , the active support of this state by the Roman Catholic clergy , and their involvement and support in the extermination and\/or forceful conversion of the Serbs and extermination of the Jews and the Roma people .