It didn’t take long for the Monday knife attack at Ohio State University to turn into a gun control rallying cry. First reports and reports throughout the duration of the attack described it as a shooting. Authorities later clarified it was a knife attack. Minutes after news broke that there was an alleged active shooter, Twitter users called for stronger gun control and blamed the attack on lackluster laws. The school is a “gun free zone,” and instructed students to “run hide fight” and stay in place. At least eight people have been taken to the hospital, with one critical...