Napalm, Agent Orange, Atomic bombs, cluster bombs, etc., and so on. All instruments of government policy.
All of them used systematically to exterminate people. All of them horrible.
Zyclon B is just another in that list. Just as horrible.
I can understand the desire to somehow make the Jewish Holocaust different, or special, we've had a lifetime of being taught that. I just don't think the case can be made. I truly believe it is part of a systematic brainwashing of the American people for political purposes. The fact that we virtually ignore what we've done to Native Americans and have Jewish Holocaust museums all over the country says a lot.