white hope

Noun

great white hope (plural great white hopes)

1. A highly skilled white/Caucasian challenger for leadership in a field whose top ranks are dominated by non-Caucasians; especially a field which was once dominated by white Caucasians, and is now dominated by those of black-African descent.
2. A person expected to succeed and bring prestige to their native group.
   • The arrest of Christo — who three times has run unsuccessfully for selectperson in Provincetown and who has been a leading proponent of the proposal to establish a [gay] community radio station here — caused the biggest stir. Considered once by many to be Provincetown's "liberal great white hope,"...1977 August 20, “7 Arrested in Undercover Raid on P'town Bar”, in Gay Community News, volume 5, number 7, page 1

See all 3 meanings of great white hope