Shameless hack.

(Politico) — A gun control group led by New York City Mayor Michael Bloomberg and backed by survivors of the 2011 Tuscon shooting is demanding in a new ad that Mitt Romney and Barack Obama take clear stances on the issue.

In the wake of Friday’s massacre in Aurora, Colo., Mayors Against Illegal Guns took out a full-page ad in Wednesday’s USA Today asking the candidates to release gun control plans. The ad is signed by 11 survivors of the January 2011 mass shooting in Tucson, Ariz., that injured Rep. Gabrielle Giffords and killed six. The daughter of one of the dead also signed the ad, which asserts that 48,000 people will die from gun violence during the next president’s four-year term.

“Another mass shooting in America,” the ad reads. “Another moment of silence. But will the moment ever end?”

“What will the next president do to stop it?” it continues. “So far, neither candidate has been willing to address the issue head on. We cannot allow their moment of silence to turn into months and years. We can honor the lost by working together to take simple steps that protect the Second Amendment and protect the lives of innocent people.”

Bloomberg, the group’s co-chair and main financial backer, was the first politician to argue the shooting in Aurora should reinvigorate a stalled national conversation about gun control.