The Human Rights Campaign (HRC) is a nonprofit organization that seeks to improve the lives of LGBTQ+ people through advocacy and education. HRC is the largest LGBTQ+ advocacy group and political lobbying organization in the United States. The organization has been instrumental in advancing LGBTQ+ rights and has played a key role in the fight for marriage equality, the repeal of Don't Ask, Don't Tell, and the passage of the Matthew Shepard and James Byrd Jr. Hate Crimes Prevention Act. HRC also publishes an annual Corporate Equality Index, which rates companies on their policies and practices related to LGBTQ+ employees.