The media act as if they’re performing a public service by refusing to release details about the perpetrator of the recent mass shooting at a community college in Oregon. But we were given plenty of information about Dylan Roof, Adam Lanza, James Holmes and Jared Loughner. Now, quick: Name the mass shooters at the Chattanooga military recruitment center; the Washington Navy Yard; the high school in Washington state; Fort Hood (the second time) and the Christian college in California. All those shootings also occurred during the last three years. The answers are: Mohammad Youssuf Abdulazeez, Kuwaiti; Aaron Alexis, black, possibly...