Original: The Gay & Lesbian Alliance Against Defamation (GLAAD) is a media monitoring organization that works to prevent the defamation of LGBT people in the media. GLAAD also works to share the stories of LGBT people in the media in an effort to promote understanding and acceptance of gay and transgender people everywhere.
Simplified: The Gay & Lesbian Alliance Against Defamation (GLAAD) is an American group that works to make sure that LGBT are not made to look bad in the media, and works so that the public are more accepting of LGBT people.