Convicted leftist terrorist Susan Rosenberg must be counted among the unlikeliest candidates ever to be awarded a university teaching post. Just four years ago, Rosenberg was serving out the 16th year of a 58-year sentence for the possession of more than 700 pounds of explosives and a stockpile of illicit weapons. Moreover, the onetime member of a leftist terrorist outfit called “The Family” was also a suspect in a 1981 robbery-gone-awry that left three people dead in Nyack, New York. However, next January students at Hamilton College, a small liberal arts school in upstate New York, will know Susan Rosenberg,...