Mike Bloomberg continues to push his national gun law initiative with this new ad featuring Roxanna Green, whose 9-year-old daughter was killed in the same Tucson, Ariz., shooting that almost took the life of Gabrielle Giffords. New York City's mayor is pulling even fewer punches than usual, too. The ad will be shown in six cities affected by mass shootings. Leaving aside the fact that gun control is the most depressing, static debate of the modern era, I don't know how much good Bloomberg is really going to do. This ad is certainly moving, but Bloomberg's reputation as an annoying busybody (see his crusade against junk food) can make his efforts feel exploitative and shallow, even if they aren't. After the jump, check out other recent spots from the Mayors Against Illegal Guns Action Fund, including a star-studded PSA posted two weeks ago that's gotten 6.5 million views.