NPR's Debbie Elliott reports on the phenomenon of crowds gathering and placing memorial objects at crime scenes. Shortly after Gianni Versace was gunned down in front of his Miami Beach residence this week, friends and neighbors of the designer, tourists and curiosity-seekers began gathering near the spot where he was killed. All week, people have continued to visit the scene, leaving flowers, pictures and other memorabilia. Similar scenes have taken place at the site of the Oklahoma City bombing and the homes of O.J. and Nicole Brown Simpson. Many of those who come have personal connections to the victims, but most don't. They give varying reasons why they feel the need to be there.