Rudy responds today with a 30-second radio ad, calling MoveOn "the most powerful left-wing group in the country."
Sound Bite: "They know Rudy is a Republican who can beat the Democrats."
Officials still not confirming whether they were given a package from mass killer, but do admit to having a manifesto of several pages
CBS News asked several people to give their views on gun violence in a new series being called, "Voices Against Violence"
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