Republicans and Democrats don’t just disagree on the issues, though of course they do. Americans are divided on which issues are important in the first place. That was the unmistakable finding of a new survey from the Pew Research Center. The research outfit polled 10,000 Americans, about a month before the 2018 midterms. The survey found that, when you break Americans out by political party, they often have totally different notions about what the biggest issues facing the country are. This chart sums it up better than I ever could: on race, on climate change, on gun violence, on illegal...