Radical is thus to be understood in its original sense: "going to the roots." Class domination and its spectacle society sharply frustrates, perverts your root potential. If overcoming this material and psychological alienation requires a role condemned by spectacle managers as "radical" i.e., "extremist," take heart in knowing the spectacle addict to be the authentic extremist: alienated most radically from his humanity. Activity in our sense is therefore not a mere expenditure of energy in movement, but a unification of theory and sensuous conduct, a praxis, a free intelligent activity: a performance of capabilities, taking into account all biological and social data, which ignores no biological and social potential.

Knowledge is Power by John McDermott excerpted from
p.351 The Movement Toward a New America – The Beginnings of a Long Revolution by Mitchell Goodman