Re: Skin tones
TBH, if you didn't know that AOC was hispanic, a HUMAN would be hard pressed to determine that from the sample photo.
The truth as I see it, is that the people making these observations might have an actual point, but their examples are so weak that they are not really making much of a case. Given the fact that both AOC and Obama are famous, it is extremely difficult for people to discount their preconceptions when looking at the performance of the process being debated.
It would have been better to pick the faces of strangers that are more recognisable as dark skinned to make their point.