"Culture war" is an extremely abstract concept, not something that can be backed up with concrete facts or statistics. The President being a right wing extremist, Brexit, republicans having control in general, this is something that can. And it's not just the older right wingers that are happy. Milo whatever his last name is, is popular on university campuses. Hate crimes have been on the rise. All of these things are abundantly clear. There were right wing crybabies complaining when Obama was President. When a D is the president the R voters complain. Works the other way around.