Revealing sexual orientation during job interview?

I am a lesbian interviewing for a job with a not for profit organization, this is a direct snippet from their affirmative action plan ".... our affirmative action plan currently concentrates on recruitment of people from four groups for its staff and committees: third world people; women; gay, lesbian, and bisexual people; and people with disabilities"... I want to be open at my new job would it be ok to reveal my sexuality during the interview?