The Rightists have George Soros, the Deep State, and the globalist elite. The Leftists have the Koch Brothers (at least until recently when they didn't seem very pro-Trump), Russia, and the alt-right.
They're not opposite sides of the same coin...at least not in terms of how they're invoked by the opposing side with regards to their level of influence.
For instance, there are plenty of folks on the right who sincerely believe George Soros is secretly writing big checks to have people bused in to protest so that the left wing media can get it on camera as a propaganda device.
The left wing criticism of the Koch Brothers rarely goes passed the fact that they're big time influences with their donations and political action committees they use as their proxies.
...and I'm not aware of any conspiracy theories about the alt-right coming from the left. Usually when the left wants to bash them, they just link actual articles and content published by the alt-right publications themselves.
People really need to abandon this myth of equivalency...I know people desperately want to defend their own side by suggesting that "both sides have bad eggs, and the lunacy isn't exclusive to one side". Fact of the matter is, the lunacy, in present day, skews much more right than left.
Even if you review some
public opinion polling from Fox News (so no left wing bias there), 40% of republicans will basically willfully embrace any conspiracy theory that attacks the left with very little coaxing required.
Is there a left-wing conspiracy about the right, as preposterous, and as lacking in substance, as the "Obama was born in Kenya" conspiracy, that 40% of the left believes? ...and not only believes, but wears as a badge of honor?