We're living amid an unprecedented surge of research on human genetics; we've never had a clearer picture of who we are and where we come from. And yet, the colloquial way we talk about race hasn't caught up with the science. Popular misconceptions abound because cutting-edge genetics can be hard to grasp--and all too easy to distort. Racist pseudoscience is on the rise--it's feeding nationalist ideology and seeping into public discourse on politics, migration, education, sports, and intelligence--and it's used to justify hatred. This vital manifesto brings us up to speed with a twenty-first-century understanding of human biology, showing how--if you want to be a responsible and enlightened citizen today--it's imperative to know what modern genetics actually can and can't tell us about race. And it helps us to see how science and history, correctly understood, are powerful allies against racism that grant the clearest view of what race actually is, rather than what we judge it to be.