Here's a thinker for you. A girl who is of European descent wishes to cosplay Katara. It's her most favorite character from any show ever and she just loves her. At first, she doesn't use any make up at all (apart from basics). The community is in an uproar. Her wonderful construction is ignored and input on it is replaced with shouts of 'WHITE WASHING." So, next time the girl wears the costume, she chooses to use a bronzer. It's not summer and she doesn't like the idea of fake tanning. Once again, the community is in an uproar. She's now brown facing and is just a horrible racist.
At the next con, the girl decides not to wear Katara. Shes had it with all of the hate and is turned off to the whole thing. She decides to cosplay as Jill Valentine from Resident Evil with her friend as Leon Kennedy. She's having a great time when she's approached for a picture for a girl dressed as Ada Wong. The girl is of African American descent. Her costume is not super well crafted, but you can tell she worked very hard. The Ada is so excited to be the character and the Jill and her Leon love talking with her. But the Jill fears this girl will have a similar experience to her's because she is cosplaying an Asian character when she is black.
Later, the girl stumbles upon pictures of them on a forum. the same forum where people had been bringing her down for cosplaying Katara. She braces herself, expecting to see people saying awful things about the Ada. But, to her surprise, everyone is praising the girl. Saying how great her costume was and how good she was for cosplaying who she wanted. The girl even recognized some of the user names as those who had been cruel to her.
Now i ask you this. Why should the Ada be praised with a less skilled costume of a character whose race she did not match when the Katara is ridiculed for a skilled costume of a character whose race she doesn't match?
Tell me how in the hell that shit isn't racist.
(this story is completely made up, but based on true events in the con world)