Twitter censors university Republican club's promotion of event featuring guest speaker John Doyle: The University of Arizona's College Republican club tweeted a promo for an upcoming event. The event is titled "The Conscience of a Conservative. 60 Years Later" and features guest speaker John Doyle. The tweet said: "UA College Republicans are hosting youtuber John Doyle on the 21st of January! Come join us and other young conservatives as we discuss the future of America! Sign up using the QR code to secure your spot!" and included a flyer for the event. Twitter censored the flyer with a sensitive content filter over it.