"the wall street journal," the university of north carolina is trying to move forward after an extensive investigation found more than 3,000 students took no show classes for nearly two decades. many of the classes were in the african-american studies program. about half of the students were athletes. nbc's tom costello has more. >> reporter: the university of north carolina, a premier university, with top-ranked athletes, reeling tonight, from what may be the biggest academic fraud in collegiate history. >> this never should have been allowed to happen. >> reporter: an independent investigato...