See how the Russians have also influenced other countries politics of recent. https://www.theguardian.com/world/2018/jan/10/russian-influence-brexit-vote-detailed-us-senate-report
It doesn't have to be ubiquitous to have a marked effect. A secret social media campaign loaded with bots and trolls coupled with money, agents, and provocateurs in some key places and wallah, you've turned a camp fire into a rager.
It is true many like to pick and chose their conspiracies like Anon Q believing the deep state is out to get Trump. He's been the greatest wet dream of crony capitalists there has ever been.
FRANCE PROBING RUMOURS ABOUT RUSSIA'S INVOLVEMENT IN YELLOW VESTS PROTESTS; "WE WILL SEE WHAT THE RESULTS OF THIS INVESTIGATION WILL BE. I WON'T GIVE MY JUDGMENT ON ANYTHING UNLESS THE FACTS ARE ESTABLISHED"; THE FOREIGN MINISTER JEAN-YVES LE DRIAN TOLD THE RTL BROADCASTER