I wouldn't want to return to the Harper days when you were an enemy of the state if you disagreed with him.
Sorry, it's Trudeau who wants to criminalize disagreement.
Remember it is the Trudeau government that was spreading disinformation, while they were talking about criminalizing disinformation.
Specifically they didn't recommend masks and they also said there was no reason for travel restrictions.
Personally I'd rather a free debate where we can freely discuss and debate the issue, rather than criminalizing one side. But authoritarians like Trudeau are scared of the truth.
That's why they want to shut down debate, because they know their position can't stand scrutiny. "The debate is over" is code for "I know I'll lose if you get to talk."
However I'm open to learn, please support your claim that Harper deemed anyone an enemy of the state for disagreeing with him.