Yeah I sympathize with you here. I kind of arrived at communism in a non-standard way that didn't involve much nationalism to jump over (I arrived at communism through an intense hatred of America during the Iraq War). But I did have to learn how other countries deal with things in different ways, based on the circumstances given to them.

Your court system example is good. I've gotten people to realize they were wrong about their warped view of other countries by simple things like showing them pictures of people walking around Moscow in the 70s, or showing them contemporary Chinese movies or music. There are some good videos on YouTube of people walking around Pyongyang and everything seems normal. That stuff is powerful, because there's no warping it. People in socialist countries by and large have normal lives full of the same mundane things everyone else does.