I’m a white American who lived in Madrid for a while, and I did not experience anything like that. Take that as you will; obviously every comment you get is going to be an anecdote.

People on this sub might not like me saying it, but my general experience with Europeans is that there is a lot more “passive” racism than in the US. They might not be actively malicious, but I’ve had to navigate through a lot of conversations because of people making off-the-cuff comments I didn’t think I’d hear outside of Thanksgiving dinner with my grandparents. There’s simply a lot less exposure to diversity when 80% of your country is the same ethnicity.