That is beside the point.
I did not truly believe they were communists, when I was sober.
In other words, I just said a whole bunch of stupid crap that I didn't really believe because I was drunk.
That's just one example of hundreds. It's one of the few I remember. :)
I'll try for the third and last time. It's not weather or not you "truly believed they were communists". That's totally irrelevant.
The point is that you had a very negative opinion of communists and that's why you chose that term. You didn't accuse them of being Australians. You accused them of being communists.
Mel wouldn't say, drunk or not, "Hungarians are the cause of all the world's problems" because he doesn't have a problem with Hungarians.