This is happening now because of the internet. The same internet gave us ISIS, MeToo and BLM. In the past if you took an extremist view and started spouting a buch of bull****, you'd become an outcast and people would avoid you. Now, you can just go online and find a community of millions of other people that think just like you and all of these people reinforce each others beliefs and it quickly snowballs. Meanwhile, people that disagree also get together and form their own groups online and so quickly the scene is set for a big conflict.