Then how about a Vietnamese person getting upset about Emmanuel Macron?
The French ruled Vietnam even more harshly than the British did India and did it for almost 100 years. They extracted everything they could economically, prevent any Vietnam from gaining anything more than token power. Then fought a war to keep their colony that killed millions of Vietnamese.
Why not try their monarch? if they've abolished that system they're more modern than the Brits. If they're irrelevant, that's probably the right place. Which is what I say of the British monarchs, they should be irrelevant but their society hangs on nostalgia and influences the same through the media while conveniently forgetting the past.
I don't see any other monarch's death being in the news and the public crying, some thoughts for you.