HYDERABAD - The protest over the suicide of a Dalit research scholar in University of Hyderabad intensified with Congress vice president Rahul Gandhi again joining the agitators at the campus and observing a day-long fast on Saturday, even as the BJP targeted him for "playing politics over dead bodies". For more than 12 hours, Gandhi, who had participated in a candlelight vigil after Friday midnight and spent the night on the campus,