Far-left politics, also known as the extreme left, are politics further to the left on the left–right political spectrum than the standard political left. The term does not have a single, coherent definition; some scholars consider it to be the left of communist parties, while others broaden it to include the left of social democracy. In certain instances—especially in the news media—far left has been associated with some forms of authoritarianism, anarchism, communism, and Marxism, or are characterized as groups that advocate for revolutionary socialism and related communist ideologies, or anti-capitalism and anti-globalization. Far-left terrorism consists of extremist, militant, or insurgent groups that attempt to realize their ideals through political violence rather than using democratic processes.