>To those insisting on calling this a cage, I hope you realize that every jail in the world looks like this. These people (not children in the picture) are under arrest for illegal immigration. They are going to be detained somewhere.

I linked above to a photograph for you showing young children (not adults) kept in the same cages.

Even if you don't care about the adults, young children are blameless. In every other type of case like this, when an adult commits a crime and their child is with them, the child is placed in temporary foster care until more suitable accommodations can be found. They don't get taken from their parents and stuck in a metal cage for weeks on end.