No, once the cure was available, that's when the study became unethical. The study no longer had much scientific value, and the men should have been told clearly that they had syphilis and informed of the cure, and the study could have been ended.
The problem with the study wasn't in its conception, but that it went on too long; past the date it was useful to provide the most valuable information (before a cure was available).
Well, if it's government we want to see them following the law to prevent abuses in power.
In that case, they did, so the law was changed (arguably improved) after.
If it's an individual citizen, that's different. The citizen just has to be ready to face the consequences (like murdering the pedophile example).
I'm sure you do, but that doesn't mean it happened. Memory is faulty. VERY faulty. It's edited and revised after things happen, and every time they're recalled. It's like that game "telephone".
There are tons of articles and studies on it:
https://www.theatlantic.com/health/archive/2013/11/how-many-of-your-memories-are-fake/281558/
Your memory is one of the least trustworthy sources of information you have.
On that scale it just wouldn't be possible. All of that information is already out there. That would be a very grand conspiracy the likes of which we have never seen.
