The Chicago police department operates an off-the-books interrogation compound. The facility, a nondescript warehouse on Chicago's west side known as Homan Square, has long been the scene of secretive work by special police units. Police practices at Homan Square [allegedly] include: Keeping arrestees out of official booking databases; Beating by police, resulting in head wounds; Shackling for prolonged periods; Denying attorneys access to the secure" facility; Holding people [as young as 15] without legal counsel for between 12 and 24 hours. Unlike a precinct, no one taken to Homan Square is said to be booked. Jacob Church learned about Homan Square the hard way. On May 16 2012, he and 11 others were taken there after police infiltrated their protest against the Nato summit. After serving two and a half years in prison, Church ... and his co-defendants were found not guilty in 2014 of terrorism-related offenses. Tracy Siska, a criminologist and civil-rights activist with the Chicago Justice Project, said that Homan Square, as well as the unrelated case of ex-Guantnamo interrogator and retired Chicago detective Richard Zuley, showed the lines blurring between domestic law enforcement and overseas military operations. "The real danger in allowing practices like Guantnamo or Abu Ghraib is the fact that they ... creep into domestic law enforcement, either with weaponry like with the militarization of police, or interrogation practices. That's how we ended up with a black site in Chicago."