I once had the immigration cops come to my family's apartment in the Humboldt Park area of Chicago. This was when I was like 13.
I answered the door and two of the cops stood there with their guns drawn shouting "Romerez, get down on the floor!"
I was a kid. I didn't say anything. I just dropped to the kitchen tile as fast as I could, and then I shouted back, "I'm not Romerez. He's in the other 2nd floor apartment."
They looked at me for a moment and turned around and kicked in the door across the hall.
This was in 1961.
Romerez was a Mexican guy who lived with his family across the hall. I used to play with his kids, hide and go seek, and tag.
I never saw any of them again.