How much longer can that keep up until we see some sort of strange Balkanization and increased secretarian violence.

I don’t see how we can keep up the facade of a united nation where more or less two factions bubble up that are clearly opposed along irredeemable lines (personally I believe there are more than two factions but they tend to bubble up and ally into just two in a way that makes differentiation basically meaningless)

I think the USA's current opponent are lobbying corporations, not terrorists or domestic insurgence.

True, you are correct, democracy specifies no specific outcome.

However, my comment should have read "bad for the outcomes of a democracy."