so, I'm not exactly sure what you need help with, so I'm just gonna assume that you want us to explain what the comment means.
basically they're saying that they were from a different country or they followed a certain religion, and people were telling them that people like them (who come from their country/follow their religion) shouldn't be in the country that they were in. Maybe because of like terrorist attacks from that country, or maybe they were in a war. Kinda of like how the Japanese were treated during World War 2.
