I think you are confusing anti-nationalism/world republic idealism with communism. Certainly the former is part of the traditional Esperanto culture -- Zamenhof

I think you are confusing anti-nationalism/world republic idealism with communism. Certainly the former is part of the traditional Esperanto culture -- Zamenhof's "interna ideo" and all that. The relationship of Esperanto to communism is more antagonistic given that the Soviet Union jailed and executed many Esperantists (see Ulrich Lins' "La Danĝera Lingvo").