I've heard South Koreans are racist. Serious racist. For instance, they literally have bars exclusively for white people in Seoul. This doesn't mean however that you, being a latino, can't go in, but it's highly likely that the barmaids will refuse to serve you and there's nothing you can do about it:

https://www.quora.com/What-is-the-most-racist-country-you-visited-as-a-tourist/answer/Senjuti-Kundu
https://www.quora.com/What-is-the-most-racist-country-you-visited-as-a-tourist/answer/Hemess-Bhai

(americans are safe here, they love them)