In the wake of several high-profile police killings last summer, support for Black Lives Matter skyrocketed among white Americans. Their new concerns about racism pushed books about race to the top of the bestseller lists, while corporations pledged billions of dollars to address injustice. A year later, though, polls show that white support for the movement has not only waned, but is lower than it was before. On this episode, two researchers explain why last year so-called racial reckoning was always shakier than it looked.