"The Blackening of the Race through Social and Economic Growth as Evidenced by the Case of the Jews of Berlin" is a controversial work by Felix A. Teilhaber in which the author discusses the social and economic consequences that he believes lead to the degradation of regional racial purity. The book is a product of its time, in which special attention was paid to nationalist and racist ideas. In his work, Teilhaber criticizes the influence of national minorities on society and the economy, based on stereotypes and prejudices. This book, although created in the last century, remains a relevant topic for discussions about racism and intolerance in modern society. This is not just a book to read, but a historical document that shows the views and stereotypes of the time, which, it should be noted, are unfair and offensive to many. "The Blackening of Race through Social and Economic Growth, Evidenced by the Case of Berlin's Jews" is controversial and leaves readers wondering how important it is to remain critical and cautious in their perception of information.