Those who believe that righteous indignation and protest politics were appropriate in the struggle to end Jim Crow, but that something less will do as we seek to dismantle mass incarceration, fail to appreciate the magnitude of the challenge. If our nation were to return to the rates of incarceration we had in the 1970s, we would have to release 4 out of 5 people behind bars. A million people employed by the criminal justice system could lose their jobs. Private prison companies would see their profits vanish. This system is now so deeply rooted in our social, political and economic structures that it is not going to fade away without a major shift in public consciousness. Yes, some prison downsizing is likely to occur in the months and years to come. But we ought not fool ourselves: we will not end mass incarceration without a recommitment to the movement-building work that was begun in the 1950s and 1960s and left unfinished. A human rights nightmare is occurring on our watch. If we fail to rise to the challenge, and push past the politics of momentary interest convergence, future generations will judge us harshly.