Let us also recognize that Russia is just one of hundreds of interests that are trying to influence conversation online, not discounting several factions in the US government.
It is very easy to spot them, especially on platforms like Twitter where they spread obvious, blatant lies. No one is immune, especially with disinformation campaigns being waged by domestic parties, corporate interests, PR firms.
It has always been a reality that the internet attracts misinformation and conspiracy, even more so in the past than now. And yet, we continue to evolve from a technology that doesn't allow for us to distinguish fantasy from reality.