.........did you seriously just downvote yourself?
You're totally right though. My mind went other places. Like sci fi places. But, no, you're right. I've seen this on Lemmy. There's a community called "The Police Problem", and they show videos shot in real time as ICE does this. And I guess it would also explain why me being white, but also a child, they'd see me both as a threat, and also needing protection. It would explain the kid shoving me for opening the door, and getting scared.
I'm going with your answer as being canon to my dream. I don't see any plotholes with that explaination, and it also explains all the weirdness......except for the stairway/MC Etcher stairs, and random new doorway. Pretty sure ICE doesn't have that kind of technology.