Anyone have side-by-side versions of the same image with one version being "less racist"? I'm having trouble seeing it. Although what the author says conceptua

Anyone have side-by-side versions of the same image with one version being "less racist"? I'm having trouble seeing it. Although what the author says conceptually makes sense, the photo of the schoolchildren looks fine to me. And I believe many scenes of 12 Years a Slave were intentionally dark - I'm sure the outdoor scenes or the indoor scene at the end when Solomon Northup comes home had much more contrast on purpose.