By Della Hasselle
MANHATTAN — Joan Rivers and "Mad Men" actor John Slattery are among the latest stars raising their voices in support of marriage equality.
The two actors uploaded videos for the Human Rights Campaign "New Yorkers For Marriage Equality," a website that encourages New Yorkers to support gay marriage.
Slattery's video was uploaded Thursday morning — only days after the premiere of his movie, "Adjustment Bureau" — and Rivers' uploaded her video just over a week ago.
"I'm John Slattery and I'm a New Yorker who supports marriage equality. Because every family needs the same protections," said Slattery, the 14th contributor to the site.
"Unfortunately, equal rights don't happen on their own. We need to fight for them."
Rivers video was added Feb. 9, and offered a little splash of humor to the sobering issue.
"I’m Joan Rivers and I’m a native New Yorker and I totally support marriage equality…what is it?" the vivacious New York actress joked on the video. "Only kidding! Do what you want. I’ve got my own problems."
"All New Yorkers believe in fairness," Rivers added. "That’s why we should support marriage equality. For goodness sake, come on guys!"
Other New Yorkers that have voiced their support for marriage equality via video are Barbara Bush, Robert F. Kennedy, Jr., Whoopi Goldberg, Julianne Moore, Kevin Bacon and Fran Drescher.
Even Empire State politicians have taken the opportunity to sound off on the issue.
"Because government shouldn't tell you who you are or who you marry," Mayor Mike Bloomberg said in his post, uploaded last October.