[lumberjack]

There is no hard evidence. This is the nature of the game. First of all how do you even suppose evidence could be procured? What form would this "evidence" have? Claims by partisan authority figures, like the media or politicians? Is that evidence? No. There is no evidence.

You have to make judgments based on your own perception and what you think is plausible, all the while being aware that your own perception is biased, by your preconceived understanding of the world, and also your perception is also actively manipulated by those who you are trying to assess.

With regards to the topic at hand I think what the GP claimed is plausible, Russian propaganda does exist, but also our politicians are now going to use this excuse every time there is legitimate discontent.

For example: a story broke out some weeks ago about Russian shills, shilling against the controversial Keystone Pipeline. This is usually not a right-wing political position. Those who stand to make a lot of money from the pipeline immediately tried to discredit all the opposition to the pipeline as Russian trolling.