Troll, you asked:

"how many times has an unpopular action that caused a change of government due to public outcry prooved to have been the correct action in the long run?"

Well, it doesn't exactly work quite that way. I don't think any Canadian government has ever been changed due to "public outcry"...

Ha! (as if the public had anything to do with it...)

No, it works more this way: The Canadian system is not a 2 party system...it's a multi-party system. Most of the time it is either a 3 party or a 4-party system, to all intents and purposes. The party that holds the most seats at any time is the governing party. IF they hold a majority of the seats, then you can be guaranteed that they will remain in office for basically about as long as the law allows (upon which they are required to have an election). IF on the other hand, they do NOT hold a majority of the seats, then they must bargain with one or more of the other parties in order to successfully pass legislation and keep governing effectively. This is called a "minority government". The ironical thing is, minority governments usually pass more progressive and better legislation than majority governments do because:

1. they aren't so arrogant and self-serving (can't risk it)
2. they must work on ideas in cooperation with others, and that can lead to better ideas

Minority governments are, of course, vulnerable to losing a key vote, in which case they are expected to immediately call an election and face the electorate again.

This does NOT happen because of a public outcry! It happens because the other parties decide the time has come to "bring down the government" and they join forces to do so. Do they do it because of their burning desire for justice and public service??? Ha! I laugh uproariously!

NO. They do it because, like sharks, they scent blood and they figure the time is right to knock over the minority government and make gains in the next election. It's 99% pure self-interest that motivates them. It's also a matter of the right timing. If they were to do it a month after the last election, the public would be mad as hell and would punish them for it at the polls...so they wait until the time seems right and THEN they join forces to cripple the minority government.

This eventuality may be accompanied by a public outcry...or not...but do not make the mistake of imagining that a public outcry is what changes governments in parliamentary systems. No sir. Party power political games are what changes governments in a parliamentary system.

So what you fear...the fickle and varying moods of the public...is hardly a factor in the matter, except as to how it may affect the coming vote in the new election. And that's a bit unpredictable. It depends on a great many different factors...just as it does in a 2-party system like in the USA.

For instance, the far better man may lose the election...just because he doesn't happen to look as good on a TV screen. You know, the usual nonsense. It's the mass marketing of a personality, and all the typical BS applies...just as in the USA.