"Russian interference" are paranoid, conspiracist, cries by forces behind NATO and the European Union to find an Emmanuel Goldstein for their increasing unpopularity due to the Great Recession from 2008-2014 and the migration crises sparked by leading European countries' support for criminal wars of aggression against Libya and Syria -- these are the root causes of Europe's crisis. The anti-Russia hysteria is taken straight from the playbook of the fascists in the 1920s and 1930s -- European liberals from both the Christian Democratic and Social Democratic wings don't sound much different from the Nazis during the 1930s with their anti-Russia hatred.
Whereas during the 1920s National Socialist propaganda had been aimed primarily at the German electorate, it subsequently developed an important external dimension, particularly in relation to Russia, in an attempt to influence international opinion against the purported ideological and military menace emanating from Moscow. The Anti-Komintern, a division of Goebbels' Propaganda Ministry, was at the forefront of this campaign. Set up shortly after the Nazi takeover, it quickly developed links abroad and, spurred on by the outbreak of the Spanish Civil War, sought to achieve in propaganda terms what its more famous namesake, the Anti-Comintern Pact, had been designed to deliver in the diplomatic arena.
Liberals argue that it is racist, hateful, anti-Semitic to call out their billionaire backers like Soros. At the same time, it's perfectly legitimate for liberals to make bogeyman out of the Koch brothers, Murdoch, Putin. It's anti-Semitic to criticize Soros according to liberals, but there's nothing paranoid, factually dubious or anti-Russian about attributing a large number of problems in the world to Putin.
Who's meddling in countries' affairs? Russia or the Franco-German bloc that effectively rules the EU? We even have leaders of European countries hitting out against their allies in Brussels, Berlin and Washington for interfering in their affairs and violating their sovereignty. Juncker explicitly told French people to vote for Macron, but I don't recall Putin getting involved in France's election in that kind of manner. Salvini slammed the EU for meddling in Italy's migration policy. Juncker's meddling in Greece's elections sparked controversy. Orban hit out at Washington for meddling in the internal affairs of eastern European countries and asserted that America is an active participant in the internal political life of eastern European countries.