(Eugene, OR)  --  A University of Oregon law professor is generating controversy after being accused of wearing blackface at a Halloween party.  "The Oregonian" reports Nancy Shurtz has been teaching at the university since 1982 and once served as chair of the law school's diversity committee.  Shurtz reportedly appeared in blackface Monday during a Halloween party off-campus, with faculty members and students in attendance.  Shurtz has since issued an apology.