The long Memorial Day weekend is the unofficial start of summer and is perhaps best known in Chicago as the beginning of its long, hot season of gun violence. The morning-after news coverage typically notes that the holiday “was the most violent weekend of the year so far,” or some such thing. You’ve probably seen the polling, which shows crime isn’t the super-hot political issue it’s often portrayed to be. But don’t kid yourself. It’s still high enough on voters’ lists to make a difference, usually coming in second-place behind economic issues.