Is income inequality becoming the new global warming? In other words, is this another case where the facts of an existential threat lose traction among a weary American public as deniers attempt to reduce them to partisan opinions?

It’s beginning to seem so.

A Gallup poll released on Thursday found that, after rising rather steadily for the past two decades, the percentage of Americans who said that the country is divided into “haves” and “have-nots” took the largest drop since the question was asked.

This happened even as the percentage of Americans who grouped themselves under either label stayed relatively constant. Nearly 6 in 10 Americans still see themselves as the haves, while only about a third see themselves as the have-nots. The numbers have been in that range for a decade.