MSU students turn backs on George Will at commencement

Click title for link to a Detroit Free Press article. Are those that turned their backs during George Will's talk "un-American"? Would Commissioner McVoy think so? From the article:

As conservative columnist George Will spoke during today's graduation ceremony, 18 Michigan State University students — wearing green caps and gowns — stood with their backs to him.
Several in the crowd of thousands at MSU's Breslin Center also did the same. Others sat in their seats, holding up newspapers and pretending to read.
It was part of a protest surrounding inflammatory statements the Washington Post columnist and commentator has made discrediting the severity of college rape. Protest organizers said the university should have canceled his appearance because of those statements.