Acting is not about changing the appearance.
Race is relevant since it tells us quite a bit about someone and people of different races are and have historically been treated differently by society. Japanese people, for instance, were(still are) quite xenophobic.
Why not cast an african or a white person as the Emperor of Japan then? Can’t they act?
Let’s have a white Martin Luther King. Let’s make black people play slaveowners and whip other blacks around, surely they can act quite well.
How do you act like you have black skin, for instance?
Why would you not compare european communist countries woth european capitalist countries? Sure, africans and asians were poorer, but that goes without saying, honestly, what does that even have to do with this matter?
East Germany was poorer than west Germany. That tells us something. The fact that Ethiopia or whatever was poorer does not really tell us much about ehich economic system is better.
How dare you!
This is not beef!
This is clearly veal.
Well, it does not have an economy, so why would it have money?
Also, it doesn’t have politics and society in the conventional sense, but men are clearly subordinate to God. Christ is king, this is the way Christians think, so I am not sure this is a correct comparison.
The question of “should Christians strive for a classless society” is a complex one. Egalitarian ideals are very new compared to Christianity, but some Christians now think that in the “fallen world” authority is undesirable as it can be abused. This is not common though.
However, Marxism is an anti-religious ideology. Marxists both believe that religion will disappear after “the base” changes and it will become, ultimately, obsolete, and also have historically persecuted and enacted violence on Christians. So I am not surprised there are not many Marxist Christians.