No.478853
Oppenheimer was kind of a piece of shit (Bravo Nolan's recent movie valorizes him a bit) tbh, and he doesn't seem to have been a very faithful leftist.
Smedley Butler exposed a fascist coup and was registered with the Socialist Party during the Depression. Several major figures involved in the field of macroevolution during the '70s and '80s were Marxists, including Stephen Jay Gould. Henry George has largely been erased from American history even though his book Poverty and Progress was one of the most popular books in history (only eclipsed by the Bible in its time). Marx considered him a right winger, though.