The "Dark Figure of Crime" is not, as one would imagine, a London-fog-bedecked, cloak-and-dagger figure slinking down a shadowy alleyway. It sounds very Hollywood, but "The Dark Figure" is simply a term used by statisticians to describe a crime that goes unreported.
Serious and even violent crimes go unreported for a myriad of social, political and personal reasons. What does this have to do with Twitter? Criminologists have for years grappled with that dark figure, and while police science research on social media is in its infancy, the ability to compare official and real-time crowdsourced data could change how we research crime.