Nobody has been anywhere near a runway, and it would be very hard to argue that they shouldn't be shot if they tried, but Hong Kong Airport was shutdown twice by the government because of protests there.
Ports, meh, it's just cargo, nobody cares. Port workers went on strike a few years ago and companies just rerouted.
Many highways have been blocked for short periods in 2019, and in 2014 major roads on Hong Kong Island were occupied for months.
The economic impact so far has been modest, but noticeable. The overall state of the regional and global economy is a much bigger factor in Hong Kong's economic situation.
We don't want anyone to die, police or protester. There have been cases where that has been a real possibility, recently, and that's mostly the red line that nobody wants to cross.