That's a bit of a stretch. Following the link, I read the bases would be used much like the Superdome was during Katrina. A poorly run government disaster shelter for those too dumb or ill-prepared for an emergency? Yes. Concentration camp? No.
While it sounds outrageous, I do wonder why the EMERGENCY facilities would be on military installations?
If they have to build them anyway, why not on property NOT surrounded by fences and men with guns?