>> they witnessed people being sold for as little as $400. many were migrants and refugees trying to reach europe. our colleague amara walker spoke earlier about the iom's efforts with its spokesman, leonard doyle. >> this was a really important report. the iom, the u.n. migration agency, we did break the story, if you will, back a couple of months back. but just putting out a press release and describing it really isn't good enough nowadays. what it really took is extraordinary bravery by cnn's reporters going into libya, witnessing an auction of human beings. and then broadcasting it. i mean...