If Europe is what it claims to be: an enlightened democracy with progressive intelligent populace it can not be broken by demented crap messages from twitter.
If however it is fucked up and on a brink of collapse then sure. Little nudge can steer it into "right" direction. but then who is guilty in a first place.
the idea that propaganda doesn't work is certainly an interesting one.
You should read up on how russian money buys influenve, eg. In Moldavia.