Recently, police have been killing and otherwise abusing people of color with what seems like increasing frequency. The Black Lives Matter movement is asking them to stop — and pushing for policy changes to help bring about that end. Back in August, the movement launched Campaign Zero, which lays out a thoughtful platform for change at the federal, state, and local levels. One of the legs of this policy platform is “accountability.” This makes sense — real accountability can be a powerful lever to change behavior. But I don’t think the Campaign Zero accountability goes far enough — I think that, in order to bring about real police accountability, we need to reform qualified immunity.