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.