The only reason that the Left hates Russia today is because they make a useful foil against Trump.
Remember Hillary as Oama’s Secretary of State presenting Putin with the Reset Button. Then later Obama caught on mike telling the Russian ambassador that after the election he will be free to make deals favorable to Russia.
Right now anti-Russia is simply a tool to be used against Trump.
And one other reason.
Russia has gone capitalist
Remember Putin's speech and letter in Pravda after Obama's first election?
His statement, "America, do not go down the road to communism, for that is what destroyed Russia".
He knows the influence the KGB had on our education system and media.
He is afraid we will re-export communism to Russia in the same way.