Ancient skeletons, funerary practices, and DNA reveal layers of inequality in past societies. It's an urgent global concern that consumes modern culture, but this social issue's full historical depth has only been realised. Ancient DNA biologist Carles Lalueza Fox explores how genomics indicated a deep history of inequality, going back many thousands of years. Novel DNA sequencing technologies revealed layers of inequality in past societies, displayed by migration patterns, social structures, and funerary practices. Here, Lalueza Fox shows that ancient skeletal DNA contains thousands of anonymous stories of inequality, bias, and suffering.