The adoption of the Hart-Celler Act in 1965, triggered a wave of immigration to the U.S. not seen since before the First World War. But these newcomers were now far less likely to have come from Europe than Asia, the Caribbean and Latin America. And they were far more likely to settle in suburbia than the “inner city.” In The New Suburbia: How Diversity Remade Suburban Life in Los Angeles After 1945 (Oxford UP, 2024) Becky M. Nicolaides analyzes the consequences of mass migration by looking at how four LA suburbs reacted—wealthy San Marino and Pasadena, working class South Gate, and lower middle class Lakewood. She invites the reader to consider whether in becoming more diverse, a community becomes more tolerant.