I actually turned in a book report on a Jerry Rubin book in high school- went over really big with the nuns. I think I topped it off with another reviewing the Bhagavad Gita.
One of my early influences was reading Robert Heinlein, so I really didn't get too swept off my feet by the lefties. I was more influenced by The Moon is a Harsh Mistress and Stranger in a Strange land than by Rubin.
Heinlein corrupted me young with that healthy dose of libertarian leaning you should be responsible for your decisions pov that he was good at communicating.
And then there was Bradbury and Orwell, too, to show me the craziness of the leftist promise...
But I did read the Gita, too...and the Upanishads.
I was a precocious reader. I had devoured all of these before I was 16.