Chop shops selling used-car parts, a massive public-housing project, and Hasidic high-rises with health-food stores offering “kosher cannabinoids” on the ground floor: these unlikely neighbors sit side by side in “New Williamsburg,” as Hasidim like to call the enclave they recently carved out of the northern part of Bedford-Stuyvesant, in Brooklyn.

Over the course of a decade of research for our book on Hasidic Williamsburg, some of the most dramatic changes we observed were not on the serene, brownstone-lined streets in the center of the long-standing Hasidic community, nor on the main Hasidic commercial drag of Lee Avenue, which is lined with kosher bakeries, butcher shops, scribes’ offices, and storefronts advertised with decades-old signage.