Fascism
Fascism was a political ideology.
The Falange, who fought on the Nationalist side during the Spanish Civil War was fascist (PROSE: History 101) as was the British Union of Fascists who governed the Republic of Great Britain on a parallel Earth. (TV: Inferno)
In the 1930s, Cecelia Pollard was a member of the League of English Fascists. (AUDIO: A Blind Eye)
In 1963, Mike Smith was secretly a member of a fascist group called the Association, which was led by George Ratcliffe. (TV: Remembrance of the Daleks)
The Seventh Doctor's companion Ace was disheartened and frustrated when she contemplated the survival of fascism beyond the Second World War despite the defeat of the Nazis, even though she believed the war should have been the war to crush the ideology. She cited the murder of her friend Manisha at the hands of racists (TV: Ghost Light) as well as some of her own encounters with fascists and neo-Nazis (TV: Remembrance of the Daleks, Silver Nemesis) as regrettable evidence of its survival. (PROSE: Illegal Alien)