Soviet Union wasn't defeated as the Third Reich was and as the current leadership of Russia sees the dissolution of the Soviet Union as the greatest tragedy in history, you aren't going any change here. The aggressiveness of Russia has been and will be refuted by the left.
Those who supported Soviet Union in the West are in no way stigmatized as those that supported Hitler and fascism before WW2. Basically what you can now do is to read some quotes of Lenin to young leftist Americans and they'll think it's cool with fresh ideas. The bloody past will be forgotten.
Here's Lenin writing about the US Elections (during his time):
In all bourgeois countries, the parties which stand for capitalism, i.e., the bourgeois parties, came into being a long time ago, and the greater the extent of political liberty, the more solid they are.
Freedom in the U.S.A. is most complete. And for a whole half-century—since the Civil War over slavery in 1860–65—two bourgeois parties have been distinguished there by remarkable solidity and strength. The party of the former slave-owners is the so-called Democratic Party. The capitalist party, which favoured the emancipation of the Negroes, has developed into the Republican Party.
Since the emancipation of the Negroes, the distinction between the two parties has been diminishing. The fight between these two parties has been mainly over the height of customs duties. Their fight has not had any serious importance for the mass of the people. The people have been deceived and diverted from their vital interests by means of spectacular and meaningless duels between the two bourgeois parties.
This so-called bipartisan system prevailing in America and Britain has been one of the most powerful means of preventing the rise of an independent working-class, i.e., genuinely socialist, party.
And now the bipartisan system has suffered a fiasco in America, the country boasting the most advanced capitalism! What caused this fiasco?
The strength of the working-class movement, the growth of socialism.