Lol, it completely depends on how you look at it.
The Raikage is a hench guy, who is fast, strong, and can probably OHKO a bear with his pinky, yet he isn't to great in the smart department and is easily angered. That basically says "****ing RAF!"
Killer Bee, he continuously raps, he wears shades constantly, and he's kinda podgie. Stereotypical black rapper?
But then on the other hand, we have the Raikage as one of the fastest men alive, he is the leader of the military force of the army, as is able to demand respect with ease. He is also arguable one of the strongest Kages, beneath Oonoki of course. u_u.
Then we have Bee, he's the host of the 8 tails, yet is able to get along with the 8th tails the second strongest Bijuu with ease, he is obviously kind hearted and forgiving, and is also carefree, which is the opposite of his brother who is constantly in rage mode. Not to mention he's probably one of the strongest people in the Narutoverse.
Then we have Darui, he is a division leader or something, he's smart, he similar in aspect to Shikimaru, who constanlty finds everything a drag while darui constantly thinks about the If's. Except now, Shikimaru is like some cannon fodder, while Darui is getting some nice roles.
All in all, if Kumogakure members didn't have so many lead roles, then I'd find it racist and would probably stop watching Naruto, and rage at Kishi through letters. I don't think its racist, its just a bit stereotypical. Lets face it, all of Kishi's characters are stereotypical.
Let's face it, Kumo is probably one of the strongest villages in the narutoverse, and its full of black people, that's enough to make me happy lol.