The gun control group Moms Demand Action For Gun Sense In America has released an emotionally charged new ad campaign, timed to the one-year anniversary of the Newtown school shooting on Dec. 14th, that appeals to its viewers to speak out against gun violence.

The ad begins with a ticking clock and images of children in a classroom, and a presumed shooter entering a school building. A voice begins, "On December 14th, we'll have a moment of silence for Newtown. But with 26 more school shootings since that day, ask yourself -- is silence what America needs right now?"

The campaign is part of an effort by Moms Demand Action to focus attention on gun reform as the country stops to mourn Newtown's victims. The group spells out the organization's mission in a press release:

"Moms Demand Action will mark the one-year anniversary of the tragic shooting in Newtown, Connecticut, with No More Silence, a campaign to honor the lives lost at Sandy Hook Elementary, and to show our resolve never to be silent again about the epidemic of gun violence. Join us. Participate in our week of action, create a paper bell craft, and mark the day of the anniversary with dozens of “No More Silence” events all across the country. At each of these events, we will ring bells to remember victims of gun violence, and to demonstrate our commitment to be vocal and persistent in working toward common-sense gun reform."

Visit the groups' website for more information about "No More Silence" events, and how you can be a part of this important day.