Asexuality
In 2001, David Jay started the Asexual Visibility and Education Network. A 2012 study found that asexuals are just as discriminated against as gay men, lesbians, or bisexuals. Asexuality has only recently been studied. One writer, S.E. Smith speculates that it has not increased, its just people have only just started noticing it.  Acceptance of asexuality as a subject of scientific has only begun recently.