Sexual orientation
Many people have been discriminated against because of their sexual orientation.  In many cultures, people who are homosexual or bisexual have been teased (made fun of), fired from their job, or made to suffer violence because of who they are.  In many countries and states, there are laws against having sex with somebody of the same gender, and people can be put in jail because of who they have sex with. In the United States, these laws were struck down (repealed) by the United States Supreme Court in the last few years. The Yogyakarta Principles are made to combat such discrimination and United Nations High Commissioner for Human Rights also made a document "Born Free and Equal" to counter them by international human rights law.