CHRISTIANSTED — A Missouri man who used gay porn app Grindr to try to prey on underage boys in St. Croix pleaded guilty to two federal charges in Golden Rock today. Robert Black, 49, of Kansas City, appeared before Magistrate Judge George W. Cannon in U.S. District Court and entered a guilty plea to the … Continue reading Missouri Sex Offender Caught In Online Net Pleads Guilty To 2 Federal Charges