The chances of zyklon just being used on jews is slim to none. Just because it was used on them it does not mean they can claim something as being offensive to them directly like chemicals to make zyklon was intended to be used on someone because their heritage.... yeah some jew hating chemist thought i'm making this to kill jews with in germany.. It's kinda like jews thinking they were the only people put in concentration camps or blacks were the only people ever enslaved before or killed and violated. People have been around forever facing descimination threats and torture every group. I'm a catholic and we tortured people. Does this mean If my band was called 'the inquisition' that i'm trying to offend certain people.
Do japanese get offended when people talk about nuclear bombs like they were just created on being intended to be dropped on hiroshima. No one knew they were going to bomb pearl harbor and the US was going to have to use the first ones on real human beings. Things happened and that's how we as people get to certain points.
People have to die because people have to have order and benifitt themselves. Something like harmony will never exist because it has never existed. It's just a word that people daydream about. Just like people that dream about god and their live being better because imagine if people had to face to truth. Truth would kill us more than bombs and weapons and people not liking each other because their heritage.