"Progressives' logic on this issue is ridiculous ..."
We often find ourselves arguing that correlation isn't causation on subjects like global warming. The distinguishing feature of this discussion is that correlation doesn't even exist! In fact, the only credible study shows that concealed carry laws have resulted in a sharp decrease in robbery and other gun-related crime. And, as Walter Williams writes today (and I remember, also), gun access was much easier before 1968 and gun crimes were no more common. I remember shooting at an indoor range on an Ivy League campus (imagine!), and seeing 22 rifles for sale in the Sears Christmas catalog when I was a kid.
How can we have so completely lost our ability to reason?