I must say that I am absolutely sickened when I have to go to "Chambers of Horrors" type places with children (most recently I had to go to the London Dungeons for one of my kids' birthdays).
I cannot help but look at the terrible machines of torture and see what suffering they caused.
Yes, you can separate the machines from the twisted minds behind them, but then to put the machines on public display in the name of entertainment is to be party to the perverted rewards that the machines once gave to their inventors and users.
Whenever a film or documentary maker wants to make a quick and potent reference to Nazi terror and oppression they use one of two images, the skeletal figure at the wire fence of a concentration camp or the Stuka tipping over into its dive.
Neither, IMHO, is to be laughed at while licking an ice-cream.
Incidentally, a Tornado may have the same resonances for generations of Iraqis.
Timothy