As China struggles with economic discontent, internet censors are silencing those who voice doubts about work or marriage, or simply sigh too loudly online.

A museum’s directors said Chinese and Thai officials pressured them to remove the names of artists whose works criticized China. The curator flew to London, fearing arrest.

In China, journalism and public debate were opening up, and then a leader took over and used a series of steps to dictate speech.

Nepal’s recent social media ban, part of a global censorship trend, helped set off widespread unrest, forcing the government to reverse course.