Overall, fictional literature is a reflection of real world culture. In the U.S., our two major political parties tell a similar narrative. Vote for us or that's the end of Democracy.
There's a general feeling of the world coming to an end soon. Climate scientists warn we are doing ourselves in. Christian fundamentalists proclaim the end is near and the Anti-christ is coming soon. This general expectation of the end is leading to an increase in fictional narratives that mirror real world fears.
That's my general assessment in so many words. Further, because government gains special powers during emergencies, more and more of government is under emergency decrees, and to enable that trick they've got to sell us on the idea that there's some emergency they need special powers to handle.