Genocide

Genocide is the destruction or attempted destruction of either a species or specific group of people.

List of Genocides

 * When The Doctor was forced to kill the Vervoids to stop them killing the humans on Hyperion III. This was used against him in a Trial occuring in his own past. When The Valeyard accused the Doctor of genocide the Doctor said that he had no other option (DW: Terror of the Vervoids). When the Eighth Doctor traveled to the events of the trial and met his sixth incarnation, he dismissed the charge due to the Artificial nature of the Vervoid's creation. (EDA: The Eight Doctors)
 * Dalek Caan committed genocide by killing all the Dalek-Humans when they refused to obey the Daleks. When The Doctor he offered help as he "already saw one genocide" and he wouldn't "cause another". (DW: Evolution of the Daleks)
 * As the Daleks believed in racial purity and their superiority, they were responsible for many acts of genocide during their history. Such as the Dax (DYD: The Corinthian Project),Eve's species (SJA: The Mad Woman in the Attic).
 * The Doctor accused his Meta-Crisis duplicate of genocide when he destroyed all the Daleks in the Medusa Cascade destroying their fleet and the Crucible. As he thought he was too dangerous he left him in Pete's World with Rose Tyler. (DW: Journey's End)
 * When The Brigadier destroyed the Wenley Moor Silurian colony Third Doctor was disgusted by the act, considering it genocide. (DW: Doctor Who and the Silurians)