That's an interesting claim to make considering absolutely nobody is claiming otherwise (except perhaps the police).
As the person who submitted this: no, it's not. Refusing to discuss police (Chinese or otherwise) overstepping their bounds simply furthers their ability to overstep their bounds. Should we not talk about Tienanmen Square or Meng Hongwei? Pinochet? Trump's new concentration camps (after ICE vowed to not build more)? How about when Raul Castro's police pull random people off the street and disappear them? Should we not share those videos?
When the incident is ongoing, the person affected is free again and clearly does not want a public debate? Yes, you should respect that, refrain from doing so and weigh in when it is discussed after the fact. I believe you when you say that harassment isn't your goal but a HN discussion will neither solve any of the underlying issues, nor is there even a remote chance of being helpful to the actual victim.
As the deleted tweet shows she clearly has a network in place to let you know when actions like this might be helpful. Days after, that's pretty doubtful.
Oddly enough, I'm not.