But it's perfectly proper language to use. Not a whole lot of Japanese died in our concentration camps because they weren't death\extermination camps. What, we now should curve the definition of words? That's what righties accuse the left of doing all the time.
It is just that she is clearly using that word to get a rise rather than focus on the actual issue. People crossing the border are not being put into camps under forced labor and being shot and gassed daily or starved down to skeletons.
There are many ways she can highlight how they are in an overcrowded situation and in fenced cages but to the U.S. government's credit they are trying so hard to give food and water and medical attention to everyone but their resources are being overrun and they are swamped by sheer numbers. The not optimal conditions are more a result of huge numbers and not enough personnel. It is not Aushwitz with an intent to kill, do lab tests, gas and dehumanize.
What exactly is the intent of AOC calling these concentration camps? Is this really similar to the Japanese horrible situation in 1940s? Is the U.S. government rounding up Mexicans and throwing them into camps trying to kill them?
We can argue how awful the separation of families are but using the words "concentration camps" is just laziness on the part of AOC. Rather than address the problem directly, the intent is to use words that create horrible images and reactions from the people that overlook the actual issue.