Proof by assertion is a fallacious argument technique. A logical fallacy is an error in logical argument which is independent of the truth of the premises. ...

A proposition is repeatedly restated regardless of contradiction. Sometimes this may be repeated until challenges dry up, at which point it is asserted as fact due to its not being contradicted (argumentum ad nauseam). In other cases its repetition may be cited as evidence of its truth, in a variant of the appeal to authority or appeal to belief fallacies. Ad nauseam is a Latin term used to describe something that has been continuing to the point of nausea. ... An appeal to authority is a type of argument in logic also known as argument from authority, argumentum ad verecundiam (Latin: argument to respect) or ipse dixit (Latin: he himself said it, where an unsupported assertion depends on the asserters credibility). ... In logic, an appeal to belief (also called the appeal to the majority or the argumentum ad populum) is a logical fallacy that is committed when someone asserts that a proposition should be held to be true, or more plausible, merely because it is widely believed. ...

The technique is described in Lenin's quotation: "A lie told often enough becomes the truth". Vladimir Ilyich Lenin ( Russian: Влади́мир Ильи́ч Ле́нин  listen?), original surname Ulyanov (Улья́нов) ( April 22 (April 10 ( O.S.)), 1870 – January 21, 1924), was a Russian revolutionary, the leader of the Bolshevik party, the first Premier of the Soviet Union, and the founder of the ideology of Leninism. ...

Proof by assertion is a technique often used by those holding strong but controversial opinions, particularly where there is a lack of credible evidence to back them up. A notable example is those who engage in hate speech, such as those who assert a Jewish world conspiracy. Zionist Occupation (also Occupied, Occupational) Government, or ZOG, is a term used to refer to the belief that the United States government is controlled by Zionists. In the context of a ZOG, the word Zionist may have several meanings. ...