Vinty, you appear to be weaving your own vivid and imaginative interpretation of history into some reality.
German antagonism against Jews started during WW1. Whereas the Communists in Germany didn't start until post WW1.
You originally claimed that Hitler's rise was due to the fear of Russia, then your claim veered towards the communists, then it shifted towards the Jews and Communism.
Your arguments are slipping and sliding through history, grasping some actuality and imaginatively applying it to suit your theories.
Hitler's rise in popularity was partly motivated by his opposition to communism, but also his opposition and support for nationalism, and anti-Semitism.
The Communist party was illegal after 1933, and was driven underground, with tens of thousands imprisoned, but Hitler's rise in popularity continued, driven by his nationalism and anti-Semitism.
The Communist party was just another political party that had enjoyed some widespread support prior to it being declared illegal.