Bernie is from a Polish Jew father and he wants socialism first and then communism.
"Both he and his younger brother attended James Madison High School in Brooklyn.[14] Sanders described both of them as post-World War II young Jewish radicals but said they were part of the crowd, not yet leaders.[15]"
Search those words.
He is not a leader in there own words, he is a failure in life. He has never succeeded at anything so far in life so whatever you want to him to be is fine. But stupid wont pay your bills.