Yeah that's right, since several european countries have history of colonization, people from the old colonize often immigrant to the country that they once where controled by. They already speak the language and so on.
Europe also got a well known history of racism and nationalism, but (this is only what I feel, nothing else) it feels like it's growing and nationalistic parties and views are becoming more accepted than before. It's really ... uncomfortable. But this is just my opinion. I don't want to speak for every european person here on mene. o.o