People have, with varying degrees of seriousness, made suggestions about what angry fans can do to show Russell T Davies their displeasure over the conclusion of Torchwood: Children of Earth and/or his recent comments about viewers who are critical of his work, ranging from the obvious (don’t buy what he’s selling; does anyone know if the actors get a cut of the DVD sales?), to the melodramatic (reading poetry at him, a reference to the Entertainment Weekly interview — “But if you can’t handle drama you shouldn’t watch it. Find something else. Go look at poetry. Poetry’s wonderful”), to the dubious (mailing him coleslaw by parcel post, which, okay, funny, but think of the poor assistants and mail carriers who’d actually be dealing with the packages), to the unacceptable (verbal and/or physical attack).
If you feel you must do something, try this: Turn your back on him.
Imagine if wherever RTD goes at the San Diego ComicCon, people silently and pointedly turn away. If, when he speaks at his panels on Sunday, people turn around in their chairs. No insults or assaults, nothing that could get security involved — just a quiet demonstration by the people he’s alienated.