"Races and Immigrants in America" by John R. Commons is a historical account written in the early 20th century. The book explores the complex relationships between various races and immigrant groups in the United States, focusing on issues of race, democracy, and the socio-political landscape of the time. The author examines how race and immigration have shaped American society, particularly in the context of freedom, equality, and opportunity. The opening of the work presents a thought-provoking discussion on the concept of democracy as it relates to race. Commons begins by referencing the Declaration of Independence and questioning the practical implications of equality among different races in a democratic society. He highlights the dual necessity for both equal opportunity under the law and the equal capability of all classes to utilize that opportunity to participate meaningfully in governance. This examination serves as a prelude to a deeper analysis of the American race problem, particularly the relationship between white and Black populations, foreshadowing the substantial exploration of race dynamics that will unfold across the subsequent chapters of the book. (This is an automatically generated summary.)