Race labels
There is a benefit to including labels that identify a person's race, since without it an AI will default to working best for the majority and minorities will get poorer service. Once you have demographic-based labels it's easy to calculate an error rate that includes reference to how bad the system performs for each demographic individually.
I'm less convinced on letting people use their choice of labels, but I'm also wary of allowing a small privileged group to dictate which are 'real' races. *CoughUiyghursCough*