Education and LGBTQ people
Historically speaking, lesbian, gay, bisexual, transgender and queer (LGBTQ) people have not been given equal treatment and rights by both governmental actions and society's general opinion. Much of the intolerance for LGBTQ individuals come from lack of education around the LGBTQ community, and contributes to the stigma that results in same-sex marriage being legal in few countries (31) and persistence of discrimination, such as in the workplace.
Source: Wikipedia — Education and LGBTQ people (CC BY-SA 4.0)