One simple example shoots you down in your tracks of conflating socialism and communism as the exact same thing:
NATO members pre USSR breakup:
EVERY single one of these countries at one time of another, some for decades, had DEMOCRATIC SOCIALIST governments whilst still in NATO and in direct opposition to COMMUNIST Soviet Union.
Belgium
Canada
Denmark
France
Iceland
Italy
Luxembourg
Netherlands
Norway
Portugal
United Kingdom
West Germany
Spain
As far as Sanders goes, he is very much inside the overarching capitalist system, his policies and thoughts are a hybrid model of both capitalism and socialism, exactly like ALL of the countries I listed above.
Neither he, nor any other democratic socialist, advocate the violent overthrow of the capitalist system, nor do ANY advocate for the dictatorship of the proletariat, 2 foundational underpinning of Marxist Communist theory.
If you don't even grasp basic level political systems and the intrinsic differences between them, you are screwed (and hurt your side) if you even have to advocate for your positions and candidates in an actual intellectual exchange. How the hell do you think you win over people to your way of thought if you come across like a uneducated rube?
I send your “fuck off” right back.