Claremont McKenna College announced Monday that it is punishing seven students -- five with suspensions -- for their role in blocking an audience from hearing a speech by Heather Mac Donald in April.  The Claremont McKenna protest is among those highlighted by many observers who say that some students in American higher education have become intolerant of views with which they disagree. In the case of Mac Donald, those protesting say that her views on criminal justice are racist -- a charge that she denies -- and that her views justified their protest.