ABC News:

An almost unfathomable gap divides public attitudes on basic issues involving gender, race, religion and politics in America, fueled by dramatic ideological and partisan divisions that offer the prospect of more of the bitter political battles that played out in Washington this month.

Great. One example of the findings: If you're a Democrat, you're very likely to agree that the workplace is still not a level playing field for women. If you're a Republican, you're very likely to disagree.

And yet: Extreme divisions that make people start talking about the merits of secession are a very old thing in this country.