Donald Carder wears his handgun in a holster as he pushes his son, Waylon, in a stroller at the National Rifle Association convention in Louisville, Ky., in May. Attendees at the convention are permitted to carry firearms under Kentucky's open-carry law. Mark Humphrey/AP hide caption
Two women compare handgun holsters during an open-carry rally at the Texas State Capitol in Austin on Jan. 1. Erich Schlegel/Getty Images hide caption
Open-carry supporters attend a rally earlier this month in Austin, Texas. Erich Schlegel/Getty Images hide caption
Activists held an open carry rally at the Texas state capitol on Jan. 1, 2016 in Austin, Texas. Erich Schlegel/Getty Images hide caption