Abstract
As the world is more globalized and frontiers are constantly more diffused, some sectors of society havethe need to underline differences and establish distance from these differences. This seems to be observedin the levels of social exclusion and rejection that members of the gay, lesbian, bisexual and transgendercommunities receive. From a perspective of evidence based practices and human rights, this article present
the current state of research on sexual discrimination. Individual and institutional homophobia is presentedas a key element for discrimination. It is discussed that gender transgression is also a fundamental elementfor the justification of hate that might lead to homicide. The need for psychology to develop ethical standardsfor interventions in these communities is presented.
