system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why has there been, seemingly all of a sudden, a big push to block pornography on the internet?

Is there some other reason besides 'think of the children' appeals to conservative voters, or is it just pandering?
gpt
It's the thin end of the censorship wedge; once censorship of porn "for the safety of children" is accepted as the norm, it will be so much easier to bring in more censorship of other types of speech/expression that someone wants to suppress. 

Porn was chosen as a type of literiture that enough people disapprove of to get a groundswell of support - it's difficult to argue that children should be exposed to more porn, without people assuming you're a paedophile, but most people would be outraged if they thought that Cosmoplitan or The Sun's Page 3 was going to be banned. 

Fast-forward a decade or so, and Cosmo and Page 3 (or things like them) could well be the next target.