I was certainly think of U.S. red vs. blue politics. I think it's bidirectional though: blue team doesn't realize how unpopular some of their key policy agendas are with red-team America, which is why they keep getting their teeth kicked in during elections. But red team doesn't realize the extent to which urban America has moved on from the cultural values of the 1980s, and both how numerous and how devoted their opposition is to their ideals. In reality, the teams are fairly evenly matched in both numbers and strength of conviction. But neither team will admit that, thinking that it's just a few errant radicals that are being manipulated by shadowy forces (Bill Gates, George Soros, and the NYTimes are the bogeyman for the reds; Trump, Miller, Bannon, and Fox News are the bogeyman for the blues). It seems inconceivable to each side that tens of millions of Americans might have sincere beliefs that differ from their own.

The mismatch between perception and reality makes me quite worried for the future of the country.

There are plenty of global examples as well, eg. everybody thought Russia would absolutely steamroll Ukraine and that hasn't happened, both Iran and the US think they have the upper hand and just need to mop up in the Persian Gulf. That's why those conflicts are still going on.

You can probably div up some factions just based off voting data. Red team made it in with just about 1/3rd of the voting population. About 1/3rd of the voting population didn't vote. Just if we're trying to put some numbers to something, those should be verifiable at least. Doesn't say why 1/3rd didn't vote, so it's just 1/3rd unknown faction.

here's a bogeyman for you, accepting money in a representative democracy for political action is maybe mere nanometers from the definition of bribery.

Perhaps a bit ahistorical, but I'm put in mind of the quote "Not even Masada began as a suicide attempt."

Interesting times indeed.