The evidence of Russian-sourced political memes so far is that it was of laughably poor quality and had trivially small exposure. It was also so ideologically unfocused as to suggest that it may have been just the vector for an advertising scam or somesuch.
There was a mountain of propaganda flying around online, to be sure. And, like you say, targeting and exploitation greatly enhanced its effectiveness. But the overwhelming majority of it, in both volume and effect, was made in America.
The call is coming from inside the house.
