The people of Hong Kong have bravely defended their freedom. But they are losing an uneven fight.
Looking at the question "can a society’s liberalism survive a government determined to stamp it out?" I think it's a very good question. If a society has become illiberal, but its' people are liberal by conviction for how long will those liberal values survive and will it only be in a minority?
Howard Caygill authored a book about how Clausewitz was a philosopher of resistance writing on the Spanish guerilla warfare against Napoleon. An interesting idea is the "capacity to resist" where you have to think strategically and sometimes "withdraw your troops". Perhaps if the people can sustain a capacity to resist the liberal values might still survive in that society. A key issue will be to what degree technology can be used for or against the people.