Sure, obviously she should apologize: 
for attempting to educate and venerating the black community for their achievements and for expressing her intentions of respect and admiration to her guests & (overwhelmingly white) students.

And further atone for not fully allowing herself to be publicly lynched for what you do & wear within YOUR OWN HOME.  


Was I personally offended:  No !!!   If I was present and bothered to inquire what her Costume actually was, I would have been enlightened and the better for it.   

Perhaps next Halloween, she could dress up as a Corp Oil owned Police Officer with a bloody baton who beats, maces & shoots, unarmed American Natives and environmentalists, since even our own President and Top Political candidates are teaching us that DOING NOTHING to stop such human tragedy is POLITICALLY CORRECT.  

Having a conscience is one thing, 'pretending' to have one is quite another.

In return, I apologize to Nancy Shurtz, for this lash she had to unfairly endure.