Elf, the horrible degenerate

So friend of a friend of a friend and I got involved in some arguments about race, and this excellent post about white apologetics came up.

I don't wanna bum everyone out with my incessant drum-beating BUT... people play genderswapped characters - even Seymour, Lord Seme, has done a genderswapped thread, right.

Why are there no race-swapped characters?