After 1945 the label race gave way to ethnicity in scholarly usage

Evidence

In scholarly language, after World War II “race” slowly began to be displaced by “ethnicity” so that Irish-Americans, for example, did not remain a “race” but became an “ethnic group” (a term that enjoyed wider circulation than “ethnicity”). — David Theo Goldberg, John Solomos, A Companion to Racial and Ethnic Studies, 696

Categorization

• XREF: Supports vault claims about the postwar semantic shift from race to ethnicity/ethnic group. — connects to: The term ethnicity was revived in WWII to replace the discredited word race — David Theo Goldberg, John Solomos, A Companion to Racial and Ethnic Studies, 695; Postwar scholarship replaced race with ethnicity as the preferred term; Ethnicity replaced race for European immigrants by the 1940s — Sahar F. Aziz, The Racial Muslim: When Racism Quashes…, 397 (+5 more)
• DEFINE: Notes that ‘ethnic group’ circulated more widely than the abstract noun ‘ethnicity.‘

Broader Connections

• Postwar scholarship replaced race with ethnicity as the preferred term #corroborates (0.95)
• Race and ethnicity were synonymous before World War II #qualifies (0.78) — Sahar F. Aziz, The Racial Muslim, 383
• Ethnicity replaced race for European immigrants by the 1940s #qualifies (0.75) — Sahar F. Aziz, The Racial Muslim, 397
• Ethnicity was revived as a category only when race became discredited #qualifies (0.75)
• The term ethnic group was coined to replace the discredited word race #expands (0.72)
• Early anti-racist scholars proposed replacing race with ethnic group as a descriptive category #qualifies (0.72) — David Theo Goldberg, John Solomos, A Companion to Racial and Ethnic Studies, 658
• Postwar redefinition of Whiteness shifted European differences from racial to ethnic #expands (0.72) — Sahar F. Aziz, The Racial Muslim, 387