SPACE RACES:

"Only the first hit's free, after that…
oh you gots to pay to play, baby."

Don't know if many people realize this, but Star Trek's Doctor Leonard McCoy was a racist piece of shit. Oh sure, he was charming with his whole down home drawl and his 'I'm just an old country doctor' southern charm and all. But beneath the surface… racist. Just hard for most people to see it since the target of his hateful invective was usually Mr. Spock. Also helping to hide McCoy's bigotry was the fact that most of the time the insults he hurled at Spock were set up and used to comedic effect, more punch line than insult. Really, how could we not laugh at a man being labeled a pointy-eared freak? It's such a ridiculous phrase… to us. But to a Vulcan, probably not so funny. 

"(Sniff) Why'd he have to be so mean?" 

Actually, nothing is funny to those guys… lack of emotion and all that. Which is probably why Kirk let that shit go on and never said anything. Probably figured that Spock didn't care, he's a grown Vulcan, he can take it. But if McCoy had thrown a derogatory comment at Sulu or Uhura, Starfleet HR would be beaming in faster than you could say 'corporate sponsored diversity training and cultural sensitivity seminar'. But you probably could say all that before they beamed in because that shit was a pretty slow process. 

"Oh you are so gonna get it! Here they come. Just you wait, mister…
any minute now… then you'll be in trouble… eventually."

Although I doubt Uhura would've needed or even called for any help dealing with McCoy's cracker ass if he got out of line and dropped a comment about her brown skin or even worse, lobbed an N-bomb in her direction. Pretty sure sister-girl would've handle things in the time-honored fashion of her peeps.

Aw shit, black woman with her hand on
her hip. Someone's about to get told.