If this person does commit violence, this filmer needs to go to prison for conspiracy. He knows what the person is planning and aided him by filming the enactment of his manifesto and telling people they will remember the creepy guy's face.
Oh and revolution, genius? Nope. More like misery for innocent people and then prison, the death penalty or a bullet to your brain at the hands of the police. How deluded does a person have to be to believe they can start a revolution by harming innocent people?
And how the hell does murdering kids help anything?
I would love to have people like this as my captive audience for a couple hours to ask them these questions and let them know the world sees them as cowards and criminals and that their lives are utterly meaningless.