Every once in a while I'll be watching a movie or whatever and something will click in my head after an actor says a line - and BAM! - a Ministry reference happens. You know, like when you watch Full Metal Jacket, and think of the song "Thieves". It's like deja vu.
Anyway, during lunch/work, I was watching a film called "The Violent Years" that got the MST3K treatment. And next thing I know, the entire bit from "So What" is going down. Including the so what refrain itself. Another wee piece of the puzzle falls into place within my brain. Hooray.
(The picture above shows the point where the evil teens says: "So what".)
Here's a youtube clip link. Go to 8:30, where a chunk of the speech was lifted from. Non Ministry fans might simply enjoy the MST3K bit as it was a good episode.