investigators believe gang bangers armed with military assault weapons shot up cornell square park inhe yards neighborhood. >> illegal guns. illegal guns. illegal guns drive violence. military-type weapons, like the one we believed to have been used in this shooting belong on a battlefield, not on a street or in a corner or in a park in the back of the yarders. it's a miracle, in this instance, there have been no fatalities. >> is this a set back to the efforts and effort that violence is down in chicago and 13 people shot and 24 shot overall in the past 24 hours. is this a set back? >> every time somebody is shot in the city it is a set back for us. the fact is, there is a structural problem with our laws that facilitates the flow of illegal guns to our streets. >> the fbi last week called this city the murder capital. how do you get rid of that image in the rest of the country? >> we keep knocking down the murder rate like we are now. this is not the time to talk about statistics. so i'm not going to do that. >> this story will be on every network newscast, would you tell america at