After World War I, the population expanded with an influx of Gottscheers, an ethnic German population from Slovenia who were dislocated in the aftermath of World War I, and spoke the Gottscheerish dialect. Other Eastern Europeans came as well. As recorded in the 1920 United States Census, the population of Ridgewood was mostly working-class homeowners from Germany, Austria, or Italy, with a smaller population from Hungary, Ireland, Poland, and Sweden. The demographic figures remained relatively unchanged through the 1930 United States Census. The large German presence led to disputes following the rise of Nazi Germany, and a large, 9,000-person boycott of Nazi Germany in April 1934 resulted in brawls between Nazi sympathizers and Jewish Communist groups. Still, in the 1939 WPA Guide to New York City, workers for the Federal Writers' Project described Ridgewood and Bushwick as "old-fashioned and respectable", and said that Ridgewood "rivals Manhattan's Yorkville as a German center."