On July 29, 2014, the City of Chicago released to the public a set of documents long sought by journalists and civil rights lawyers. It then appears the names of Chicago police officers with lots of misconduct complaints from May 2001. The Citizens Police Data Project (CPDP.co) is a tool for holding police accountable to the public they serve. CPDP takes 56,000 misconduct complaint records from the Chicago Police Department. The records that would otherwise be buried in internal databases are open up to make the data useful to the public, creating a permanent record for every police officer and a public record for every civilian complaint. The codebase for CPDP and all of the underlying datasets plus data processing scripts and FOIA responses are available publicly on GitHub https://github.com/invinst/chicago-police-data