Cynthia Nixonrevealed her son Samuel is transgender in a sweet Instagram post on Friday.

The candidate for New York governor, 52, shared an empowering message to her son Samuel — or Seph as he likes to be called — on Instagram during Trans Day of Action, June 22, with a #TBT photo from his graduation earlier this month from the University of Chicago.

“I’m so proud of my son Samuel Joseph Mozes (called Seph) who graduated college this month. I salute him and everyone else marking today’s#TransDayofAction.#TDOA,” Nixon wrote in the caption.

Samuel, 21, was born Samantha Mozes. Nixon shares Seph and 15-year-old son Charles Ezekiel Mozes with ex-husband Danny Mozes.

The formerSex and the Citystar is also mother to Max Ellington Nixon-Marinoni, 7, with her wife, Christine Marinoni. The couple married in 2012. Marinoni, an education organizer who has served as AQE director, met Nixon in 2001 when the actress was campaigning to reduce N.Y.C. public-school class sizes, perThe Advocate.

Thestar is currently running for governor of New Yorkagainst Andrew Cuomo, a Democrat, which she confirmed in March.

Nixon is a staunchadvocate for LGBTQ rights, writing ina 2015Varietyop-edabout marriage equality, “We have to keep organizing like our lives depend on it.”

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“Similarly, LGBT characters aren’t new; everybody has LGBT people in their family. And everybody needs to make the effort to come out in any and every way they can,” Nixon continued. “If people who are opposed to equality realized how many individuals they already like, admire or even love are LGBT, the battle would be over. It’s important to come out to our parents, children, co-workers, boss — you name it.”

She has been outspoken about a series of issues, including repairing New York City’s subway system, as well as abolishing ICE. On Thursday, shecalled it a “terrorist organization”while calling President Donald Trump “its egomaniacal leader.”

source: people.com