People think the concentration camps of Nazi Germany were a horror that we could simply never fall into the trap of repeating. We'd learned the lessons, we're not like that... sadly humans are a fucking twisted species and you give people some power and control and inevitably bullshit like this happens. Abu Ghraib, here, soldiers around the world raping kids because they can and so on.
Our depravity has gone nowhere, and as more and more right wing views seep back into everyday discourse and become more and more accepted again, largely driven because of irrational fears that are preyed upon by governments and sections of the media (terrorism, immigrants, disease ridden degenerates .. *descends into V For Vendetta Prothero speech*), then we're seeing this kind of thing repeated in multiple western countries.
We're fucked and don't think shit like concentration camps can't happen again. We all need to get mad about this and never stop shouting until this crap no longer happens, and we can all take our western moral superiority and shove it up our asses for good measure, we're no better than anyone else and just as susceptible to going down a dark path as any other entity has done before us.
EDIT: In the UK we have private security companies like G4S being given control of child detention centres and the like (and running into issues of improper care almost immediately), a very VERY dark path to go down, turning the protection of minors, immigrants, the metally ill etc into a profit driven business. Aye like that won't go spectacularly wrong. Fuck this evil neocapitalism.