In Bradbury’s fahrenheit 451 the public support for censorship came from people watching bland inoffensive TV shows. He’s not too far off but there’s an added dimension. Today a lot of people have their own bubble of partisan news and entertainment which is tailored to the target audience, when people venture outside their bubble things seem strange and offensive. The instinct seems to be the desire to expand their bubble so they aren’t exposed to cartoons, jokes or information from outside.