People in comments of this post pointed out coloring your face black is racist.

May I ask you Americans why is coloring your face considered racist?

Coming from Europe, I personally do not see anything wrong with trying to color (in any color) your face to match any other race.

I believe is should be normal to color our faces in any color. Is it also racist if black person would color their face in other skin tones? Why? Also interesting thought: What about tanning yourself?

Or is it for some reason not ok to acknowledge people have different skin tones? Of course you do not do it out of disrespect, racism, etc. But out of acknowledging character you are trying to represent looks different than you.

I also noticed people pretend to not see differences in skin tones. What is up with that? I thought racism meant to hate or disrespect people of different races. But why is coloring your face considered disrespectful?

Maybe this image itself has racist background I do not understand, but I would like to know answers to my questions in general, since American culture has quite influence on quite a large chunk of our globe.