Here’s the reality: more than half of the women killed with guns in the U.S. are murdered by their partners. Every month, 46 women are shot and killed in the U.S. by a current or former boyfriend or spouse. We researched mass shootings between January 2009 and January 2013 and found that 57 percent of mass shootings involved the murder of a partner or other close family member.

But we know that common-sense gun laws will protect domestic violence victims and save lives. In states that require background checks, 38 percent fewer women are shot to death by intimate partners.

That’s why we’re pushing Congress and state legislatures to close the loopholes that make it easy for domestic abusers to get guns without a background check—common-sense changes that the gun lobby refuses to support. If abusers can simply go online and buy a gun, how can their partners ever be safe from harm?

We’re also working to prohibit stalkers from buying guns—and to make sure that convicted abusers don’t get to keep the guns they already own.