Clarence Thomas on Wednesday delivered a televised broadside against progressivism, a political philosophy he described as an existential threat to America and the principles that founded it 250 years ago.

“Progressivism seeks to replace the basic premises of the Declaration of Independence and hence our form of government,” Thomas said in a speech at the University of Texas Austin Law School pegged to the nation’s upcoming milestone birthday.

A spirit of “cynicism, rejection, hostility and animus” toward America – by Americans – has taken hold, Thomas said in remarks carried live on CSPAN.