I dont know the source of the picture, but I assume the picture is at least from the later years of the Regime, after the Wannsee Conference. So the author of the post ist obviously refering to death camps and the holocaust and not the German concentration camps from the early years. I mean, someone else replied with a fucking joke refering to sprinklers.

Concentration Camps in general werent that uncommen in western countries. Sure, as far as I know Germany "invented" the modern Concentration Camp System, but that was for the Herero Genocide in 1904. But to some point, many countries had something similar. At least in their colonies. Because fucking up foreign ethnic groups was and still is a western speciality.

And if you want a (in my opinion) better comparison for the ICE Camps, you dont have to look far away from the USA. Take something like the Detainee Camps for Japanese originated People in the US during WW2, something newer, like Guantanamo Bay or all the other fucked up CIA- and War-Prisons-torture-Camps from the past 70 years.

But please, please, please - comparing something like the ICE-Camps to the by far most abominable crime in all human history is in my opinion wrong. And many experts think likewise. If you are interested, i can look up material for this.