Many critics have called Massachusetts Senate hopeful Elizabeth Warren a "racist" for relating a family story about how her grandfather had "high cheekbones like all Indians do." But they're wrong. The comment wasn't "racist." It was stupid. In fact, it was childishly stupid. Really, it reminds one of the copout Bill Clinton disgorged when addressing his marijuana use: "I tried it, but I didn't inhale." And it should come as no surprise, either — leftists are childish. As for the "racism" charge, many conservatives take that leaf out of the left's book because, they figure, turnabout is fair play. If...