In the aftermath of the massacre in Aurora, Colorado, New York Mayor Bloomberg wants President Obama and candidate Mitt Romney to talk about gun violence. Could that possibly be a winning issue for either side? What's the history of gun control? Are multiple killings America's "new normal?" Also, Rupert Murdoch's former editors are charged in Britain's phone hacking scandal. On Reporters Notebook, is it too late for Bashar al-Assad?
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