They've brought the skin-lightening debate back. Colorism has a long and sordid history. From the preferential treatment of lighter-skinned slaves to the promotion of modern skin-bleaching beauty products to darker-skinned women, this might seem like an ancient form of prejudice. Still, artificial intelligence is bringing it to the fore once again. Tate Ryan-Mosley explores how the beautifying filters on apps like Snapchat and Instagram are lightening and smoothing the skin, and how the impact is regurgitating trauma for communities of color.