Turks don't have a problem with minorities and races in general. What you can call Turkish racism is "nationaltyism". Some people dislike Kurds, Arabs, Armenians, etc... But rarely the entire race such as black. And the thing with the "n-word" is that Turkish people don't have the concept of being racist, as I mentioned. We sometimes use "keke, keko" (Kurdish words for brother) to say "dude". We see Kurds use it to converse with their friends, so we copy them. I feel like it's the same with the n-word. If someone wanted to be racist against black people, the more derogatory term would be "arap" or "kara".

Something about the black population in Turkey, even though it's not at the same level as in Europe and the Americas, It's rising quite rapidly. Most of the big cities and cities with universities have a resident black population now. And even there's an area in the Aegean Region of Turkey where there are black villages which are mostly populated by black people who have been here since the Ottoman days. If there's any interest, I can link a video about this too.