I think sometimes the best hiding place really IS in plain sight.
The preservation of knowledge and [unpopular?] political beliefs in times of social upheaval is sort of the burden of those who choose to be educated... despite whatever consequences may arise... in some ways the people who work to preserve the methods of growing and using cannabis for medical purposes are charged with a similar responsibility, that is; to protect that information from obscurity, no matter what current governments around the world may be doing to destroy it...
Preservation of knowledge and history is the greatest achievement of Mankind, period- despite the fact that we aren't all that good at it sometimes!