July 20, 2012
07/20/2012 | 24m 20s
A horrific mass shooting at a movie theatre near Denver, Colorado. The campaigns talk about tax history and economic policy as attack ads from both campaigns intensify. And the fighting in Syria spreads to Damascus as the rebels achieve new victories. Joining Gwen: Pierre Thomas, ABC News; Karen Tumulty, The Washington Post; Jeff Zeleny, The New York Times; Doyle McManus, Los Angeles Times.
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