The racism that the author sees probably comes from the fact that the Klingons are even darker skinned, not like the civilized and lighter skinned people of The

The racism that the author sees probably comes from the fact that the Klingons are even darker skinned, not like the civilized and lighter skinned people of The Federation. This was a very common trope during much of Victorian history, leading to roles such as the "savage assistant", the "learned black apprentice", etc. While the civilized colored folks from the white civilization could be reasoned with and would even sacrifice for their master, those even darker dark folk would just attack sight as they were incapable of reason. I haven't seen the show so I'm going off of the article and what I've seen the depictions of the Klingons as, and can't really offer more insight than the translation I've given.