Anne Applebaum writes about the National Intelligence Council's assessment of foreign threats to the 2020 election. The report particularly emphasizes the success of Russian efforts to undermine the institutional framework of American democracy.
As a result, supplying an edited audiotape or a piece of false evidence to one of the bottom-feeders of the information ecosystem is incredibly easy; after that, others will ensure that it rises up the food chain. Russian disinformation doesn’t succeed thanks to the genius of Russians; it succeeds thanks to the sharp partisanship of Americans. Russian disinformation works because Americans allow it to work—and because those same Americans don’t care anymore about the harm they do to their country.
Large segments of the news ecosystem are eager if unwitting Russian assets because Russian disinformation sensationally comports with their partisan views. But I'd go further to say that large swathes of America have effectively become Russian assets, blinded by partisanship and no longer able to reject even the most thoroughly discredited disinformation seeded by Russian agents and aggressively promoted by fringe agitators in social media as well as the crackpot denizens of right-wing media.