Political commentators on the Left noted a significant change in how President Obama is making his case for more gun control. The change has been perceptible to Brett Logiurato at Business Insider, Sam Stein at Huffington Post, and Adam Chandler at the Atlantic. Just hours after the horrific massacre in Charleston, President Obama expressed his sorrow: To say that our thoughts and prayers are with them and their families and their community doesn’t say enough to convey the heartache and the sadness and the anger that we feel. He said that the FBI was considering the massacre a “hate crime”...