Sexualism

Also known as sexual orientation discrimination, is a form of discrimination. This includes homophobia, lesbophobia, and biphobia.

In society
Many hate groups discriminate agianst people with sexual orientations that aren't heterosexuality.

Iran
Iran started being homophobic during and after the country became a theocracy in 1979, they started to outlaw homosexuality and started executing people just because of Their sexual orientation.

In religion
Some people that are religious believe that homosexuality and being a lesbian is a sin. Because they rely on religion to be lesbophobic and homophobic. There has been these controversial and unnecessary camps called "pray the gay away places".