There's probably a breakdown somewhere, isn't there? I'm sure I've seen one - I'll go look. I've heard it said before, certainly, and I've noticed it a couple of times, but I'm not sure. If the leads are both white and a lot of one-episode-only characters die, if they're casting for diversity, there would be a higher proportion of non-white characters dying, IYSWIM. And it also depends on which of the characters are written as a certain race, I guess, and which are just cast that way.

I don't normally (well, always ~blush~) pick up misspellings, but I liked that one. Most of my mistakes are homonyms too...