California’s Department of Justice mistakenly posted the names, addresses and birthdays of nearly 200,000 gun owners on the internet because officials didn’t follow policies or understand how to operate their website, according to an investigation released Wednesday. The investigation, conducted by an outside law firm hired by the California Department of Justice, found that personal information for 192,000 people was downloaded 2,734 times by 507 unique IP addresses during a roughly 12-hour period in late June. All of those people had applied for a permit to carry a concealed gun. The data was exposed just days after the U.S. Supreme...