There have been other times in our history when the fabric of American identity was stretched in similar ways — the Civil War, heightened levels of immigration at the turn of the 20th century and the cultural upheavals of the 1960s.

But during these eras, white Christians were still secure as a demographic and cultural majority in the nation. The question at stake was whether they were going to make room for new groups at a table they still owned. Typically, a group would gain its seat in exchange for assimilation to the majority culture. But as white Christians have slipped from the majority over the past decade, this familiar strategy is no longer viable.

White Christians are today struggling to face a new reality: the inevitable surrender of table ownership in exchange for an equal seat. And it’s this new higher-stakes challenge that is fueling the great partisan reorientation we are witnessing today.

The temptation for the Republican Party, especially with Donald Trump in the White House, is to double down on a form of white Christian nationalism, which treats racial and religious identity as tribal markers and defends a shrinking demographic with increasingly autocratic assertions of power.