Xenoracism is when someone mistreats a group of people because they come from a different country or culture. It is like racism, but it is against people from different countries rather than people of different races or skin color. It means that people are being mean and exclusive to somebody just because they don't come from the same place as them. This can happen in different ways, like not letting people come to your country, or not being nice to them when they are there. It can also be saying mean things about somebody's culture, or believing that one culture is better than another.