People hold a banner picturing Communist figures including (L–R) Karl Marx, Friedrich Engels, Vladimir Lenin, Josph Stalin, and Mao Zedong, as they gather in Bakirkoy district as part of the May Day rally in Istanbul on May 1, 2017. AFP PHOTO / OZAN KOSE
Trevor Loudon is an author, filmmaker, and public speaker from New Zealand. For more than 30 years, he has researched radical left, Marxist, and terrorist movements and their covert influence on mainstream politics. He is best known for his book “Enemies Within: Communists, Socialists and Progressives in the U.S. Congress” and his similarly themed documentary film “Enemies Within.”