You really need to show me where The Founding Fathers say that Freedom is Speech is out there to talk about weather while enjoying tea.
The Freedom of Speech is there to talk about dangerous, unpopular ideas without the Fear of Prosecution. And that's what PC killed. Example: try having any type od scientific discourse even in a medical field about DNA differences among races that cause higher rates of lung disease among blacks.
Just plain stupid. And I agree that future generations will be laughing at PC as much as they laugh at MacArthur communist witch hunt from 1950s.