the 400s downrom to 50, and stay there for some time. >> why did that wayne? >> if you look at drug patterns, trucks tend to spike in popularity. cycles and 20 year go down. the crack cocaine epidemic is no more. there are still people who use cocaine. there are still people who use crack cocaine. it is nowhere near what it used to be. driving the violence -- that dropped us down into the 200 range. but we got stuck there for a long time. even when i took it over in in 2006, 181,169 persistent with gang violence. accelerated during the crack cocaine years. even when the crack cocaine went away, and the gangs did not. coming down to that 186, down to where we are now -- about a 54% drop. it has been a constant focus on our gangs. gunhigh-end illegal offenders, and really staying focused on those things, and bringing the community and to work with us. has been absolutely key in dropping in that last 54%. >> that was a portion of an encore presentation of q&a. you can see the entire program today at 7:00 p.m. eastern. [captioning performed by national captioning