The biggest thing that comes to mind (as a non-Canadian) was the Harper government banning scientists from making public statements. It's as if they knew all evidence contradicted the policy they were trying to enact, so rather than enact better policy they just decided to silence anyone who could provide evidence of their malfeasance.
No disagreement from me that that policy was absolutely shameful. But it falls a ways short of "successive insanely excessive right wing governments", at least for me.
