KANPUR, Jan. 8 -- A 27-year-old gangster, who has 30 criminal cases against his name, was arrested in Kanpur on Tuesday, two days after a high-voltage drama near the office of DCP (South) in Nirala Nagar, where he celebrated his girlfriend's birthday by leading a convoy of 12 cars, driving recklessly, performing stunts and brandishing illegal firearms, said police....