2. There's nothing inherently wrong with being a Marxist (despite an obvious misunderstanding of economics).
3. From 1 and 2, it is only your politically correct / conversationally damaging standoffishness that creates your perception of "heated". This explains a lot really. You're more worried about being inoffensive than right, which is exactly why you've chosen the path you've chosen. Ignoring facts and complaining about nonexistent "strong and heated" words. This isn't a good way to learn anything.
There is literally no difference. Your concentration on this is just a way for you to tuck your tail between your legs without running. You're wrong, so you concentrate on what you think is "controversial" and pick out semantics so you don't have to confront your own ignorance.
An underinformed person could get informed, a dumb person maybe not. There are far more underrepresented groups than just minorities, so equating the two is simply ignoring critical facts about the world. And though broke and poor are pretty close to being synonyms, there is still a distinction: broke implies a temporary state.
One day you'll learn that the world is more nuanced than your absolutism would have. Perhaps we can have a reasonable discussion then. For now I'm done feeding the trolls.