File this under things we always suspected but never thought we could prove: Detroit police officers now how to dance.Or at least this one does. A Detroit cop was purportedly caught on a party store camera dancing while he scanned the store's selection of Faygo pop. YouTube user Tessamc13 uploaded the video, appreciatively titled "DETROIT POLICE CAUGHT ON TAPE BREAKIN IT DOWN" in 2008, and it's since garnered more than 181,000 views.