Speaking with Australians, I'm told by a few people now that the revolutionary left down there is actually active and effective — or at least more so than it is here in North America. It's got me thinking about why that might be.
Certainly, here, I wonder if the separation and broad swaths of relatively heavily populated rural areas makes things worse. Communists are notoriously technophobic, in my experience, and besides that, don't have the presence or the funding to reach out to rural areas, so are mostly concentrated in urban places, where people are more likely to be progressive anyway. Thus, there is a huge population in both Canada and the United States that really has no choice but to be reactionary, making communist efforts much more difficult. Australia's population, though, is much more concentrated.
That situation goes for Europe, though, too, and I know less about how effective European movements are, due to language barriers. Certainly, we aren't exactly winning in the UK.
I'd love to hear thoughts from people more informed on these matters than I am.