This book is so ridiculously insightful.
Oppression is caused by socio-cultural structures which tyrants thrive on and exploit, its bottom up not top down..
The past is cyclic and the cycle is petrified into the structures of society, our cultural/historical myths which dictate our current thinking and perpetuates the ills of previous societies such as greed, corruption and thirst for power.
Our society is a pyramid, and we sacrifice ourselves and others to the "Gods" of history in order to keep the flow of our society in flux.
Criticism is the essense of freedom, silences is the stagnant petrification of the status quo and the birth of authority.
Essentially, the problem is our own, and we must own up to it and change our society to remove the structures which oppress us. Why are we controlled and manipulated by power hungry individuals and businesses? Because we let them and structure our society around it and continue it on as ever...