It may be strange for tourists to land in Hong Kong to find throngs of impassioned protesters. They might wonder: What do they expect me to do about the Chinese government?
Tourists come from all over the world to see the elegantly industrious city-state.
"It is like a cauldron," Jan Morris wrote in her book Hong Kong, "seething, hissing, hooting, arguing, enmeshed in a labyrinth of tunnels and overpasses, with those skyscrapers erupting everywhere into view, with those ferries churning and hovercraft splashing and great jets flying in."
But there are also visitors coming to Hong Kong from China's mainland. They are citizens of a country in which they have no political freedom and little uncensored information, and live under threat of imprisonment if they dissent.
They come from the country the Hong Kong protesters don't want to be their future; even as they know each day brings them closer to 2047, when Hong Kong is to be absorbed into the whole of China.
President Trump is vocal when he decries China's trade policies. "China was killing us with unfair trade deals," he said again this month.
But he has not raised his voice against China's human rights crimes, including the mass detention of Chinese Uighurs in reeducation camps or the widespread imprisonment of political dissidents.
To be sure, even those U.S. and world leaders who criticize China about human rights have been reluctant to risk losing any of the lucrative trade with the country. Their moral indignation has mostly stayed rhetorical.
But when Trump was asked about the protests in Hong Kong this week, he once more praised Chinese President Xi Jinping as "a very great leader" and called for a "happy and enlightened ending to the Hong Kong problem" — which seems to say protesters are "the problem" — not China's increasingly steely rule of a place to which it had promised autonomy for 50 years.
I think a reason protesters descended on Hong Kong's vast international airport was to appeal personally to people from all over the world. Their protest might have inconvenienced tourists. But it might also pierce their conscience and make them consider if China's vast wealth can buy the silence of the world.
The protesters have made a song from Les Misérables, a Western musical, their anthem as they sing, "Who will be strong and stand with me?"