COSTELLO: The director of the FBI says an uptick in crime nationwide may be partly due to the so-called Ferguson effect. We all know what happened in Ferguson, Missouri, the city racked by months of unrest after a white police officer shot and killed an unarmed black teenager in August of 2014. But is that impacting how police deal with criminal behavior today? The FBI director, James Comey, will share his thoughts next hour to the International Association of Chiefs of Police in Chicago. CNN justice reporter Evan Perez is covering the story for us. And I guess he gave us a preview, Evan.</s>EVAN PEREZ, CNN JUSTICE CORRESPONDENT: He sure did, Carol. It's not very often that you hear the FBI director tackle these questions about race and about the effect of -- essentially of the unrest in Ferguson and the effects since then on policing. But that's exactly what he's been doing this weekend. He spoke on Friday to the University of Chicago Law School. And that's where he really waded into this issue, giving voice to something we've been hearing from cops around the country, which is that they believe there's some cops who are holding back on doing some of the things that they normally do to -- out of the fear that they'll end up on YouTube, you know, because of some incident that people believe might be racially charged.
FBI Director Says Ferguson Had Chilling Effect on Law Enforcement