Coloradans Remember 9/11: Why Do We Mark The Anniversaries Of Tragedies?

09/08/2011 05:17 pm ET | Updated Nov 08, 2011

Why do we mark the anniversaries of tragedies? Two experts on this topic join us. Stewart Hoover directs CU Boulder’s Center for Media, Religion and Culture. He wrote about memorializing 9/11 in a book called "Religion in the Media Age." Also with us: Barbie Zelizer. She’s a professor of communication at the University of Pennsylvania. She studies times of crisis and how we remember those times. Her newest book is “About to Die: How News Images Move the Public.” Hoover and Zelizer speak to Ryan Warner.

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