In the comments of a Guardian article about the cult-like nature of Britain’s shrinking political parties:

Technology has driven cultural changes, what we see is what politics looks like when people have so much control over what they see, and who they speak with.

Social media allows us to choose our friends and block, mute, ignore or unfollow people we don’t agree with. There have been various studies done on group polarisation and how people form opinions and act in a world where – as that commentator writes:

they can essentially choose their own reality and only associate with those who agree with it.

The consequences of a society being dominated by insular, self-selecting tribes is a great topic for science fiction.

And a bit scary to boot.