It really is an almost impossible situation. The far right will win this one regardless what the government does. If they do nothing we will probably see some form of terrorism sooner or later, if they clamp down on it they will prove the activists right in that the government will reduce freedom of speech just because some muslims cant behave.
Maybe theres some way to eke out a win but I cant see it.
Ottawa is on the same latitude as Venice so it's not like canada is very northly (though i know canada has a much more varied temperature range). That aside i think there are many reasons, like the southern countries are not as wealthy as US and theres a culture of using other methods to survive the heat such as building colors, not paving every cm^2 of land etc. And if we look at more northen Eu countries like where I live (sweden) the highest ever measured temp is 38c (100.4f). So anyone here who needs an AC for the few days when the temp is above 25c is a card carrying bitch.