El Paso, Texas. Dayton, Ohio. These two cities are the latest in a long string of communities that have experienced horrific mass shootings. And once again, the news of these shootings bring up many questions. Dr. Sierra Smucker lays out what we know about mass shooters and the connection to domestic violence, what gun regulations are already on the books and whether or not they seem to be effective, and what more can be done to prevent future shootings.

For more on this topic:

• Read Sierra's SSN brief, Why the United States Remains Hobbled in Protecting Women from Gun Violence.
• Check out her opinion piece for The American Prospect
• Find the RAND project on Gun Policy in America