The Assault on Culture
Stuart Home’s brilliant 1987 book THE ASSAULT ON CULTURE: UTOPIAN CURRENTS FROM LETTRISM TO CLASS WAR is available in full, here. While it’s aged a lot, this was the book that introduced me to a lot of revolutionary ideas and cultural critiques. It’s also the book responsible for for starting my years long love-hate relationship with the Situationist International and the Fourth International.

Well worth checking out if you’ve never read it.

That cover is in Spanish, not Portuguese.
I don’t know if a Portuguese version exists. There is a Brazilian one (in Portuguese):
http://www.screamyell.com.br/literatura/assaltoacultura.html
Gah! Many thanks.