>To be clear the article is talking about States suppressing freedom of expression (not the ephemeral Twitter mob).
The point I am trying to make is an intolerant population is really easy to control by an intolerant state. The people in power at the top usually don't actually care very much about the topics of intolerance, but they are a useful tool for building and maintaining power.
Intolerance in a population is a weakness exploited by people in power. Fan the flames of that passion and now and then nudge it in a direction which is useful to maintain that power. How do you think Trump got a mob to storm the capital building?
People in America are almost begging for authoritarian solutions to their perceived problems with morality. They want the government to force their opinions on everyone. This is true across the political spectrum, and there are plenty of examples of it.
Countries don't fall victim to authoritarianism, populations consent and encourage it (and then afterwards get upset with the result when it's too late).
Hitler achieved power through popular election, he took what some people wanted, turned it into what many people wanted, and directed it towards his personal goals.