In England some white people are committing acts of criminal damage and chanting racist chants because some other white people, who are liars, told them Muslims are to blame for everything.
Meanwhile, in cyberspace lots of agitated and easily-led white bigots are brigading a female Algerian Muslim boxer because some other white liars told them she was a man.
In neither case do facts seem to matter. If you want to know what the post-fact world looks like, this is it.