One of the ongoing issues my MC faces is people who hate him because of his background. He's mixed from the two main countries at war, so that gets a lot of double takes and unsavory comments. He's also bi and in a relationship with a man, has BPD from his past trauma, and had a poor upbringing which doesn't really fit into the elite social sphere he was brought into. Basically, he got to the top of the social food chain but few people actually wanted him to be there.
The world is an alternate Earth so their races/nationalities aren't one-for-one with real life but they do have general equivalents. The main countries are Melkambria which was inspired by Native American societies and Jumor from European kingdoms. Another important one is Abyrryta inspired by East Asia. The story deals with colonialism (though I don't remember if it's ever explicitly called that) since Jumor was trying to be an empire and it caused a two hundred year war because the people they invaded went screw that and everybody kept fighting each other.
Also, a bonus: there's a character with a prosthetic leg from a war injury, and I'm realizing I'm revealing quite a lot abut the world that hasn't been mentioned at all yet... whoops.