Genetics, enviroment, advertising?!?!
I just read this. If you do not filter the thought that enter your mind, you
stop to be a free person. If not you behave and act like a puppet on
[On bended knee]
You, my Master.
That's a simple one to answer - nobody; and it has been that way for a long time, too! (And long may it bloody continue that way).
PS: I am intrigued as to why you are making it sound like a given - i.e. that our minds are always going to be controlled by somebody? All I can say to that idea is "when Hell freezes over first!"