A federal hate crime was committed and statute broken:
"The
Civil Rights Act of 1964 enacted
18 U.S.C.§ 245(b)(2), which permits federal prosecution of anyone who "willingly injures, intimidates or interferes with another person, or attempts to do so, by force because of the other person's race, color, religion or national origin"
[1]"
Just last week an ex-Ole Miss student was arrested and charged with a hate crime for hanging a noose:
http://www.newsweek.com/ex-ole-miss-student-indicted-racial-hate-crime-317568
"A former student of the University of Mississippi, Graeme Phillip Harris, has been indicted for allegedly hanging a noose around the neck of a statue of James Meredith, the Southern university’s first black student, as well as displaying a Confederate flag in February of last year.
A grand jury indicted Harris on Friday on civil rights charges, according to the Department of Justice. He was charged with conspiracy to violate civil rights in a “flagrant” move to intimidate students of color. Mississippi’s NAACP branch has called the actions a “racial hate crime.”
^
The Duke offender admitted to committing a federal hate crime. The investigation is over. The Duke offender should be arrested, if he hasn't been already, and his name released to the public just like Gaeme Philip Harris.