“We’re better than this,” Clinton says in the video. “We need to close the loopholes and support universal background checks. How many people need to die before we actually act?”

Clinton has pledged to take on the National Rifle Association and other pro-gun entities on the campaign trail, attacking them and opponents of gun control measures with increasing frequency. It’s an issue that plays well with the Democratic base, but also one where she differs with her main rival, Bernie Sanders, who is perceived as being to her right on gun control.

While the front-runner’s latest round of television ads have largely focused on policies, Sanders’ campaign just went up with its first spots of the cycle: biography-heavy clips intended to introduce the Vermont senator to primary voters.

Seeking to combat the perception that he is against gun control, Sanders has also brought up the issue on the stump — marking a shift from the 2008 presidential campaign, when Democrats did not uniformly speak out for such gun restrictions so openly.

Clinton in particular was largely silent on the issue when she ran in 2008, except when criticizing Barack Obama for what she called his “elitist” and “out of touch” comments that some Pennsylvanians are “bitter, they cling to their guns.”

The video also comes as Clinton is set to talk more about gun control during campaign stops in Iowa on Tuesday, according to an aide, and just one day after she met in Chicago with the mothers of some young African-American men who were killed by police in recent years — including Trayvon Martin, Tamir Rice, and Michael Brown.