It's worth remembering that MK Ultra was officially running until 1973 and broke exactly the same rules as the Tuskegee trials.
This isn't ancient history, and it's definitely something people should be educated about, and vigilant in trying to prevent from happening again.
I'm not from the US, and I can tell you that incidents like this are major stumbling blocks when the US asks other countries to trust it as "the leader of the Free World".