Photo courtesy Polk CountyA couple of students from Harvard Law School recently got a taste of the Polk County Sheriff's Office and spent some time in the county jail after going out on assignment for their internships at a Houston legal clinic. The students had driven to Livingston to interview a Polunsky Unit guard at his house, helping attorneys from the Texas Defender Service get favorable statements about Willie Pondexter, an inmate scheduled for execution on Tuesday. When they got to