system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: Modifying skin color (i.e. blackface) for costumes is not racist as long as the wearer is not accentuating stereotypes or mocking.

I got into an argument at work about this and now a co-worker has labeled me As a racist. As a white male, if I wanted to dress up as Lando from Star Wars for Halloween this year and decided to modify my skin color with make up in order to make the costume look more real then I do not think this decision would be morally wrong or racist in any way. Modifying my skin color would be racist/wrong if I did it to accentuate stereotypes associated with African americans. It would also be wrong if I did blackface as a way to mock individuals. But racism is the belief that one race is superior to another or is entitled to do things that members of another race are not. Using makeup to change the color of my skin does not promote those beliefs, therefore it is not a racist or a discriminatory action. 

Disclaimer: I would not do this due to the nature of the current social climate in America because people would certainly get offended. But just because someone of another race is offended by an action is not cause to label that action as racist or discriminatory.
gpt
The reality is that some things just have so much historical baggage associated with them that they can't be done at all.  Swastikas were used by a number of military and religious groups prior to WWII, but there is just so much historical baggage thanks to the Nazis.

Blackface falls in to the same category.  It was nearly universally used to mock and disparage African Americans for decades and that history is still there.  We can't ignore that history and, like the swastika, it is still too recent to make blackface culturally allowable.