>> reporter: derricka wilson is with the black and missing foundation. >> ...but you know, at the same time, there are gabby petitos in the black and brown community, and these families are desperate just to get their cases heard. missing persons isn't a black issue, it is not a white issue, it's an american issue, and we all have to come together to bring these missing people home. >> reporter: laundrie's parents appear to be holed up at their florida home-- not a lot of activity there today. tonight, petito's immediate family it is back on long island where she is from. and we're learning that many in that community plan to light candles from their home on friday in memory of gabby petito. norah. >> o'donnell: jericka duncan, thank you very much. tonight, we were intrigued by this story, because there are students at several universities that are demanding action, after reports of sexual assaults at fraternities. cbs' nikki battiste report onepus whe tempers are flaring. >> reporter: the anger and