Simple enough to start doing a Google search and start checking out Icke's track record. I'm busy right now but have enough time to lift from the David Icke Wikipedia page- which includes citations:
In The Robots' Rebellion (1994), Icke introduced the idea that the Global Elite's plan for world domination was laid out in The Protocols of the Elders of Zion, a hoax published in Russia in 1903, which supposedly presented a plan by the Jewish people to take over the world.[54] According to Mark Honigsbaum, Icke refers to it 25 times in the Robot's Rebellion, calling it the "Illuminati protocols."[55]
In his 2001 documentary about Icke, Jon Ronson cited this cartoon, "Rothschild" (1898), by Charles Léandre, arguing that Jews have long been depicted as lizard-like creatures out to control the world.[56]
The Protocols portrays the Jewish people as "cackling villains from a Saturday matinee," as Jon Ronson put it in his documentary about Icke, David Icke, the Lizards and the Jews (2001).[54] It was published in English in 1920 by The Dearborn Independent, Henry Ford's newspaper, becoming mixed up with conspiracy theories about anti-Christian Illuminati, international financiers, and the Rothschilds, a Jewish banking dynasty. After it was exposed that year as a hoax by The Times of London, Michael Barkun writes that it disappeared from mainstream discourse until interest in it was renewed by the American far right in the 1950s.[54] Barkun argues that Icke's reference to it is the first of a number of instances of his moving dangerously close to antisemitism.[57]
Icke's use of the Protocols was greeted with dismay by the Green Party's executive. They had allowed him to address the party's annual conference in 1992, despite the controversy over his Wogan interview, but in September 1994 decided to deny him a platform.[58] Icke wrote to the Guardian denying that The Robots' Rebellion was antisemitic, and rejecting racism, sexism and prejudice of any kind, but in the same letter insisted that whoever wrote the Protocols "knew the game plan" for the 20th century.[59] Barkun argues that Icke was trying to have it both ways, offended by the allegation of antisemitism while "hinting at the dark activities of Jewish elites."[60]
54^ a b c Barkun 2003, pp. 49–50.
Ronson (Guardian) 2001.
The Protocols of the Elders of Zion was written around 1897, probably under the direction of the Russian secret police in Paris, and purports to be transcripts of 24 addresses given to a group of Jewish elders. See United States Holocaust Memorial Museum, and the museum's timeline.
It was exposed as a hoax in 1920 by The Times of London, which wrote that it was a work of plagiarism derived from two sources: The Dialogue in Hell Between Machiavelli and Montesquieu (1864) by a French satirist, Maurice Joly, which had nothing to do with Jews; and Biarritz (1868), an antisemitic novel by a German writer, Hermann Goedsche. See Barkun 2003, pp. 48–50.
For more background, see Kay (National Post) 2011.
55^ a b Honigsbaum (Evening Standard) 1995.
56^ Ronson (Channel 4) 2001, 06:12 mins.
57^ Barkun 2003, p. 104.
For more on this, see Simms 2002, p. 33ff.
58^ Independent 1994.
Chaudhary (Guardian) 1994.
Goodwin (Independent) 1994.
59^ Icke (Guardian) 1994.
60^ Barkun 2003, p. 144.
Icke writes: "I strongly believe that a small Jewish clique which has contempt for the mass of Jewish people worked with non-Jews to create the First World War, the Russian Revolution, and the Second World War. This Jewish/non-Jewish Elite used the First World War to secure the Balfour Declaration and the principle of the Jewish State of Israel in Palestine (for which, given the genetic history of most Jewish people, there is absolutely no justification on historical grounds or any other). They then dominated the Versailles Peace Conference and created the circumstances which made the Second World War inevitable. They financed Hitler to power in 1933 and made the funds available for his rearmament. See And the Truth Shall Set You Free, pp. 120–121, cited in Offley 2000a.