S.C.U.M. Manifesto (Society for Cutting Up Men) by Valerie Solanas
For whom didn't read it yet, this is the original English version of SCUM manifesto.
Some feminists say this book includes black humor, however, I believe Valerie was totally serious about what she wrote.
And that is so insightful.
Though we couldn't have made the world she tried to make, that all men are eliminated, we have to understand why we should aim that.
It's the first step of being a real human, not a slave.