Officer Ray Tensing stands next to motorist Samuel DuBose during a traffic stop for a missing front license plate on July 19, 2015. Moments later, DuBose was shot dead by Tensing, who is being tried on charges of murder and voluntary manslaughter.
University of Cincinnati Campus Police video/AP
A box of 500 .22 cal. bullets are offered for sale at an Illinois gun store in 2012. California voters are voting on a measure that would require ammunition buyers to face the same background checks gun buyers in the state do.
Scott Olson/Getty Images