[dragonwriter]

> Gender identity is fluid, and not nearly as clear cut as something like race.

Racial and ethnic identity is a product of social context and probably somewhat fluid fundamentally, but the social context most people are exposed to probably results in it not tending to express all that fluidly in most cases, especially given that there is less social acceptance of divergence between socially-ascribed race and racial identity than is even the case with gender identity (even in the case of people of mixed ancestry, there is often strong social judgement if they don't identify primarily with the race that is perceived by others to be dominant in external expression.)