Paris, Colorado Springs And The Psychology Of Fear

The University of Chicago has canceled classes today over fears of possible gun violence there. The FBI told the school that someone posted a threat online against the campus quad for this morning at 10 a.m.

Over the past few weeks, colleges in Washington and Kentucky have also been shut because of threats, and schools in Philadelphia were on alert because of online postings.

Here & Now's Jeremy Hobson speaks with Stetson University psychology professor Chris Ferguson about how the fear of gun violence affects people and the response to threats.