Haven't these pro-Beijing students ever tried to access uncensored information online that was denied to them until they arrived in their host countries? Why are they content to continue believe in the propaganda? You'd think that even a casual search for a subject like Tiananmen Square would be a wake-up call.
That’s not how propaganda works, I assume the vast majority of these students haven’t left the country until close to adulthood. I completed elementary school in China and the teaching begins in grade 1 for students to believe in communism and patriotism. When you have been raised in that belief for your entire life, changing your belief system is not as simple as “look what other people with a different view say!”.…
Americans are going to look at the broader issue here and think "Last time this happened for us we just shot at them until they left" and disregarding the practicality of such notions, it's nevertheless baked into the collective consciousness and constitution.
Tl;dr this is the one major situation where guns, as they exist in the US constitution, can be justified unequivocally.