Original sentence: Its critique of technological society makes the manifesto a Neo-Luddism tract, sharing some ideas with other contemporary anti-technological writers such as John Zerzan, Fredy Perlman, Jacques Ellul, Lewis Mumford and Derrick Jensen (though its scope is broad, as Kaczynski also devoted large sections to criticizing "leftists" and "oversocialized types")
Edited sentence: Its critique of technological society makes the manifesto a Neo-Luddism tract, sharing some ideas with other contemporary anti-technological writers such as John Zerzan, Fredy Perlman, Jacques Ellul, Lewis Mumford and Derrick Jensen (though its scope is broad, as Kaczynski also devoted large sections to railing at "leftists" and "oversocialized types")