That was a grim week for British politics. Making an unspeakable tragedy in the Middle East about ourselves takes some doing, but the Commons managed it. Worse, some politicians, rather than recognising the danger of this type of division, have sought to weaponise it. In Friday’s Telegraph, Suella Braverman declared Britain was “sleepwalking into a ghettoised society”, arguing that ours is not a country “where different faiths and races [coexist]” peacefully. Her words imply Britain is ever more segregated, but is that true? The 2021 census lets us test her claims, and luckily recent research has used it to document changes since 1991. In the Britain we actually live in, not the bleak place Braverman paints, residential segregation along ethnic lines is eroding decade after decade. As Britain has become more diverse (74% of the population of England and Wales was white British in 2021, down from 87% in 2001), so have far more places within it. We simply don’t have any big cities with the kind of segregation seen in, say, New York or …