unless my timeline is wrong and the internet is wrong, 
https://peakd.com/introduceyourself/@deanclifford/hello-i-m-dean-c-clifford-a-political-activist-and-until-recently-a-notorious-political-prisoner-of-canada

looks like the conference call was 2015 and his next re-education camping ended sometime in 2017. 
he is fascinating, one of the first action-figures of this research.

TLDR: speaking out "i didn't do it!" is a claim against oneself and the snitch no longer matters.

long conference talk here, trying to teach dean to not make claims that he cannot defend:

https://www.bitchute.com/video/aUQkpLIS5Rpr

spoiler: i am led to believe that he has not learned his lesson, because he went to prison again sometime after that conference call.

Stacker Saloon

saloon

TLDR: speaking out "i didn't do it!" is a claim against oneself and the snitch no longer matters. 

long conference talk here, trying to teach dean to not make claims that he cannot defend: 
https://www.bitchute.com/video/aUQkpLIS5Rpr

spoiler: i am led to believe that he has not learned his lesson, because he went to prison again sometime after that conference call. 