A place families are rounded up against their will and herded into in large numbers and not allowed to leave, where a hated minority is sequestered off from the rest of the population while we contemplate their fate.
I can think of another term for it.
And it's not like it's never happened here before; it's just strange to consider that we're doing it now, in the 21st century. Of course, I guess it's not so strange to this person. Ya know, it is just uncanny that she wrote that in 2004, not even 2 years before the erection of the, er, "holding facility." Hmm, ironic, I guess. Hmm.