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Xenophobia was the fear and/or hatred of strangers, foreigners and aliens.

On Skaro, Ian Chesterton recognised that the Daleks were intensely xenophobic, describing their hatred of the Thals as a "dislike for the unlike". (TV: "The Ambush")

The Seventh Doctor described the 1950s as the height of American xenophobia as a result of the Cold War. (COMIC: The Good Soldier)

Xenophobic views towards the Welsh was known as Cymrophobia. (AUDIO: Superiority Complex)

In the year 200,000, the Jagrafess manipulated humanity into becoming increasingly xenophobic. (TV: The Long Game)

The Inter Minorians became xenophobic after the Great Space Plague had been brought to their homeworld, Inter Minor. (TV: Carnival of Monsters)

In the late 22nd century, a political group called Earth United was created by xenophobic humans to prevent aliens from re-invading Earth after the Dalek invasion. (AUDIO: An Earthly Child)

20th century author H. P. Lovecraft was notorious for his xenophobic views. He was particularly disgusted by Calypso Jonze, calling them a "mongrel", earning him a punch from them. (AUDIO: The Lovecraft Invasion)

The human colony of Urth was intensely xenophobic towards towards anyone from outside their settlement. (AUDIO: For the Glory of Urth)