You do not put children in adult prison. It doesn’t have the facilities for counseling or education to help them.
You’re acting like they aren’t still minors and we should just give up on them because they’re violent instead of trying to rehabilitate them.
And also, we have no idea if these teenagers were put into jail for violent crimes. There’s nothing saying that in the article. You’ve just decided it out of nowhere and set up a straw man.