The culture war brims over with skirmishes over the Second Amendment. The modern Left maintains that it is dangerous and leads to higher crime rates, and that it was only important in our pioneer past. Some members of the Left may believe this, while others just don't like that it is a check on arbitrary power. The Right, whatever that means, sees it as a protector of individual rights. (What is the Right, anyway? The Left claims that the German Socialist Workers Party were on the Right, as though Hitler was passing out handguns to Jews to keep them out of the camps.)
It was not always the case that Democrats were so against the Second Amendment. Consider:
-David