during the nato summit. >> a little more than a year, the local mess hailed him a hero. but by the end of 2012, the number of homicides in chicago had skyrocketed to more than 500 and some aldermen were calling for mccarthy's job. >> my biggest issue is dealing with gangs, guns, and the press. not cultural change in the department, not acceptance of an outsider. none of those things. they all pale in comparison to those challenges right there. and the media, they keep talking about the rising toll of gun violence in chicago, while the numbers are going in the other direction. >> while the press continues to focus on chicago's violence, there's been a decline. in 2012, there were 161 murders in the first quarter. in 2013, there were 93. that's more than a 40% reduction. >> we're taking a more wholistic approach to crime reduction here in chicago than i think has been done in most places in the country. >> what are you trying to achieve? >> i'm trying to save the world.