Belief that homosexuality was acquired through sexual contact was one of the ideas fueling the
persecution of homosexuals in Nazi Germany. Because of the all-male organizations for boys and young men, such as the
Hitler Youth,
SA, and
SS, the Nazis were afraid that homosexuality would spread rapidly in the absence of a harsh crackdown. The murders of the
Night of Long Knives were partially justified by claims of crushing alleged homosexual cliques in the SA.
Adolf Hitler stated afterwards that "every mother should be able to send her son to the SA, Party, or Hitler Youth without fear that he would be ethically or morally corrupted there". A 2018 study in the United States found that exposing participants to scientific information about the causes of homosexuality did not change support for
LGBT rights.
Age of consent laws Belief that it is possible to become homosexual through sexual contact with a person of the same sex has been cited in order to justify setting the
age of consent higher for homosexual acts than heterosexual ones. This was the case in Belgium, the United Kingdom, and Germany both in the
Weimar era and in West Germany. In the 2003
European Court of Human Rights case
S. L. v. Austria, the court ruled that "modern science had shown that sexual orientation was already established at the beginning of puberty", therefore discrediting the recruitment argument. The court, therefore, found that the different age of consent for male homosexual relationships was discriminatory and violated the applicant's human rights.
Censorship The belief that homosexuality can be acquired by reading about it in media has been cited in justification for censorship of LGBT-focused media in the Weimar Republic in the United Kingdom with the
Section 28 law intended to prevent young people from learning about homosexuality, ==Public opinion==