Why did antiforeignism flare up so viciously in the postwar years?

Antiforeignism surged in the postwar years due to a combination of economic hardship, social upheaval, and a rise in nationalism. The aftermath of World War II left many countries grappling with instability, leading to scapegoating of foreign influences blamed for local problems. Additionally, the influx of immigrants and foreign ideas triggered fears of cultural dilution and loss of identity, further intensifying xenophobic sentiments. This volatile mix fostered an environment where antiforeign attitudes could thrive, often manifesting in violence and discrimination.