The Kuznets curve was widely used to describe the relationship between growth and inequality over the second half of the 20th century, but it has fallen out of favour in recent decades. This column suggests that the current upswing in inequality can be viewed as a second Kuznets curve. It is driven, like the first, by technological progress, inter-sectoral reallocation of labour, globalisation, and policy. The author argues that the US has still not reached the peak of inequality in this second Kuznets wave of the modern era.