Rachel Levinson-Waldman is Senior Counsel at the Brennan Center’s Liberty and National Security Program. She works on issues related to policing and technology, including police use of social media, body cameras, license plate readers, and other types of surveillance technologies. Her recent work has uncovered a treasure trove of documents about the NYPD's efforts in "predictive policing" - basically, if the pre-crime effort of the movie Minority Report comes to real life, it's going to start here.