fascism is extreme leftism

Only those suggesting fascism; extremism and leftism can define what it is; while all those consenting to it can only reason (want vs not want) against each other about what it means.

It's state control of culture

Statism and culturalism are suggested by others to tempt one to ignore dwelling/cultivating (life) within a controlled (inception towards death) environment, hence within motion...not affixed (state).

internally "liberal"

Only within (internally) balance can one be free (liber) will of choice...