The US criminal justice system is a broken machine that wrongfully convicts innocent people, sentencing thousands of people to prison or to death for the crimes of others, as a new study reveals. The University of Michigan law school and Northwestern University have compiled a new National Registry of Exonerations – a database of over 2,000 prisoners exonerated between 1989 and the present day, when DNA evidence has been widely used to clear the names of innocent people convicted of rape and murder. Of these, 885 have profiles developed for the registry's website, exonerationregistry.org.