I had a coworker from Spain, he was very "balanced" and reasonable on all things. One day, during the 2017 Catalan independence protests and referendum, we (non-Spanish people) tried to understand the different arguments and the current situation, and someone mentioned that IF (we didn't say it was the case, we said IF) one day the overwhelming majority of Catalonia wants to leave Spain for whatever reason, an option for "amicable" split would be preferable over a revolution.
He completely snapped, said all kinds of very mean things about Catalonia, that I don't want to repeat here, but my point is that it's very difficult to view these things from a different perspective and do not get emotional if all your life you heard only one perspective.
I noticed similar tendencies from people from every country that are in the news and are somewhat controversial (Israel, Palestine, Pakistan, US, Poland, Ireland just to name a few).