Ever watch 'Amerika' (the 1987 abc miniseries)? The backstory is a russian 'bloodless' takeover in an alternate 1997 because americans turned inward rather than stand up for their country's values. Meanwhile, the soviets established dominance in the rest of the world. This takeover was prefixed by a massive manipulation of the last presidential election. It had three candidates, two of which were russian patsies meant to divide the country over petty concerns. When the time came, they both were used to discredit the third, someone who might've been able to stop it.
There are issues with the series (pacing, direction) and obviously the political stage is completely different, but I think this main theme (of americans turning inward, allowing themselves to be factionalized into petty, misinformed castes) rings true today. The russians fooling with american politics is a dangerous proposition.