The free world is where you choose to make it so. There are no barriers to your conscience. You are free to help the down and out and free to give to charity and you are free to speak your mind. This applies to all people everywhere. You are also free to murder anyone you disagree with until someone takes exception to you doing so.
Several people have been successfully prosecuted for treachery of one sort or another. Klaus Fuchs is a particularly good example. The fact he was ignorant of the evil Russia was and still is capable of was no excuse. What was an excuse is that Russia was an ally that Churchill was (and thus all of the British at the time were) in the process of giving half of Europe to.
Who was there to say that Churchill was the traitor?
Our parents/grandparents were free to do so at any time and a few did.
Yet to this day Fuchs is fucked and Churchill remains an hero.
As for the sordid affairs of the US secret service, Oppenheimer suffered malicious persecution, not for being a spy and not even for being a communist but for being suspected of being a communist by the US secret services. We all know what sort of stupidity was rampant there in the 1950's. A place lauded as free; where you couldn't choose your own politics or beliefs.
The free world is what you make it, not what other people tell you it is.