Roosh is a textbook corruptive sociopath - it was his narratives and others like him / inspired by him that turned Eliott Rodger from "the awkward rich kid sitting by himself" to "HOLY SHIT HE'S INSANE!!"
I doubt the massacre would've happened were it not for Roosh and his team's devotion to spreading "neo-masculinity" / "A Real Man Is A Killer". His words are often extremely militaristic and let these people who're in the shitpit feel like they can escape it by being frightening and dangerous and working for this vague "Restore the Patriarchy" end Roosh wants.
Similarly, without Roosh's manipulative words and militaristic notions, would that old fuck from Louisiana actually have gotten the idea to do what he did at the Amy Schumer flick? I doubt it.
Most of these people are utterly dysfunctional, bitter loners from what I've heard - and by and large, despite the stereotype, loners aren't especially dangerous...unless they're given a belief system like neo-masculism.
Essentially, Roosh architected the creation of a twisted martyr for his own side, and used this to inspire more deranged neo-masculinists to take up arms or be more violent and confrontational than they otherwise would be.
Forget Dean Saxton - he rambles. Roosh is the real "Philosopher of Rape". After all, who gets more invitations to speak at these hate conventions? Brother Dean? Or Roosh?