In politics, a red flag is predominantly a symbol of socialism, communism, Marxism, trade unions, left-wing politics, and historically of anarchism; it has been associated with left-wing politics since the French Revolution (1789–1799).Socialists adopted the symbol during the Revolutions of 1848 and it became a symbol of Communism as a result of its use by the Paris Commune of 1871. The flags of several socialist states, including China, Vietnam and the Soviet Union, are explicitly based on the original red flag. The red flag is also used as a symbol by some democratic socialists and social democrats...

Political colours are colours used to represent a political ideology, movement or party, either officially or unofficially. Parties in different countries with similar ideologies sometimes use similar colours. For example, the colour red symbolises left-wing ideologies in many countries (leading to such terms as "Red Army" and "Red Scare"), while the colour orange symbolizes Christian democratic political ideology, and the colour yellow is most commonly associated with liberalism and right-libertarianism.The political associations of a given colour vary from country to country, and there ar...