"In the years 1913 and 1914 I expressed my opinion for the first time in various circles, some of which are now members of the National Socialist Movement, that the problem of how the future of the German nation can be secured is the problem of how Marxism can be exterminated."
Hitler, Mein Kampf
Hitler detested Communists, not because he fundamentally disagreed with their anti-capitalist stance....He just saw them as rivals that were in his way.
A good number of the SA were former Communists, and joined the SA, because they wanted to be the source of change in Germany to a socialist system......which turned out to be one of the main reasons Hitler had them purged, they were scaring off the industrialists Hitler needed to build up his war machine.
But Hitler’s writings indicated, that once the war was won, and the industrialists were no longer needed, they were to be eliminated as a class.