Seems logical: You're the victim of a crime, you have security camera video, so you post it for the world to see on YouTube.
See this story from public radio reporter Tony Ganzer.
The New York Times reports:
Other police forces have also discovered YouTube. Some have looked into
apparent crimes that appear in YouTube postings, and a police force in
England used the site to distribute an appeal for help from the parents
of a murder victim.
