Add David Dinkins to the list of New York City mayors – former and current – urging New Yorkers to support the legalization of gay marriage.

Former mayors Ed Koch and Dinkins have followed in the footsteps of current mayor Mike Bloomberg in recording a video supporting the cause.

“I know that we are a diverse people who believe in fairness and equality,” the 83-year-old Dinkins says in the 31-second ad. “Marriage equality should be the right of all New Yorkers.”

“So I ask you to join me as a New Yorker for marriage equality,” Dinkins adds. (The video is embedded in the right panel of this page.)

In his video, Koch says New York “is not doing so well when it comes to fairness.”

Both ads were released on Friday.

In his ad released in October, Bloomberg says he supports gay marriage because “government shouldn't tell you who to love or who to marry.”

The ads are part of an ongoing campaign that features prominent celebrities and politicians, including Hollywood couple Ethan and Ryan Hawke, Robert F. Kennedy, Jr., and actress Fran Drescher. The campaign, backed by the Human Rights Campaign (HRC), the nation's largest gay rights advocate, hopes to build momentum on the issue now, ahead of a hoped-for second attempt to legalize the institution later this year.