Where does any effective communism exist in the world?
It ain't in Russia or China. So where is this fearsome marxist ideology people keep mentioning other than, perhaps at a massive stretch, North Korea? There are none I can think of. There are some principles being built towards in these so-called 'communist aligned' countries, but I think you are more speaking of a fear of social democracy, myself. Most of these countries exist within the field of capitalism but its outcomes are more just than in the West.
Just my opinion.