I think it's hard for American Republicans because they are sitting in the minority and thus they feel persecuted or ostracized because the majority do not share their views. The demographics and mindset of the majority is changing from what are some of the archaic viewpoints of the GOP and their supporters, so it's scary for them to see this change. I also think this feeling becomes amplified when they are exposed to the liberal demographic of other countries, because the current day right of the US is so extreme they have little in common with the right of other developed nations. You have to look at Middle Eastern theocracies or African dictatorships to find similar ideas to some of the more extreme positions of the GOP. There is also a lot of propaganda used on them about countries other than their own to scare them into believing ground shaking things are happening elsewhere in the world and they're coming for them next. This is very effective when you're dealing with people who have probably never even left their own country and have no context for other parts of the world. They'll believe whatever has been shoveled at them.
For example, I've voted Conservative here for a long while until our most recent federal election. The Republican party of the US is a shitshow and would never get my vote. The sort of garbage they dogwhistle and the theocratic mindset they have is anathema to democracy. If our Conservative party here started to put the sort of significance on things like abortion, gay marriage, bathrooms or denied proven scientific realities - they would be dead in the water. I couldn't see them ever having a chance at assuming power again, they'd be a laughing stock.
I don't see the massive outrage over this video. These are university students who tend to believe they know it all when they don't know shit. Everything is black and white to you at that age and you haven't developed the ability to hear and tolerate different opinions than your own without acting up. Never mind that this speaker is an extremist and his views are quite alien to the bulk of this country and contrary to our values, left or right. It's worth mentioning that Toronto is the most multi-culturally diverse city in the world, accounting for the GTA and city proper, the population is about 10 million. You go to school and work here with people from every possible background. You'd be hard pressed to ever find yourself out in public anywhere that you wouldn't see every colour of the rainbow represented. For all the crazy propaganda you hear spewed these days about immigration and refugees, Toronto soundly makes the case that you can have a huge population that is diverse in race and faith, with none of the scare mongered crisis some believe would take place in such a situation.