EXCLUSIVE INTERVIEW: Drew Barrymore - "I Don't Want To Live In A World Where Prop 8 Exists!"

A passionate Drew Barrymore was among the celebrities joining thousands of people marching in West Hollywood Tuesday night in protest of the California Supreme Court's decision to uphold Proposition 8, the constututional amendment that bans same-sex marriage.

Click here to see our photo gallery: "The Prop 8 Protest in Pictures"

Barrymore --speaking exclusively to RadarOnline.com -- said "I don't want to live in a world where Prop 8 exists."  The outspoken star also told us she was raised by gay men and women. "It's who I am." Said Drew: "You cannot define a family.. I will fight for as long as it takes."

Watch California erupt in protests