Well, 60-70 years is about the horizon over which previously secret programs become revealed. The US has been continually caught performing unethical actions in secret which either involve human testing (occasionally on their own citizens) or subverting medical programs for ulterior motives.
There was drug testing that the US got caught at 50 years ago, and only halted 40 years ago.[1] And in the past few years, they subverted a vaccination program in to being a tool of a spy agency.[2]
Had the Nazi regime merely "reformed" rather than been completely replaced following a war, apologized 60-70 years after the fact for their genocide during WW2 which they'd attempted to keep secret, and been caught at least once a decade running similar covert programs, I'd think citing a well documented historic case of their misdeeds would actually be a pretty good way to show exactly why people don't think highly of them.
There was drug testing that the US got caught at 50 years ago, and only halted 40 years ago.[1] And in the past few years, they subverted a vaccination program in to being a tool of a spy agency.[2]
Had the Nazi regime merely "reformed" rather than been completely replaced following a war, apologized 60-70 years after the fact for their genocide during WW2 which they'd attempted to keep secret, and been caught at least once a decade running similar covert programs, I'd think citing a well documented historic case of their misdeeds would actually be a pretty good way to show exactly why people don't think highly of them.
[1] http://en.wikipedia.org/wiki/Project_MKUltra
[2] Any recent news about how they found bin Laden.