Tens of thousands of people demonstrated at LGBTQ Pride marches worldwide Sunday.

At the New York City march,video of teacher dancing sex student participants included Chelsea Manning, who was celebrating her first Pride since being released from prison as a free transgender woman.

The ACLU, the American Civil Liberties Union, tweeted a photo of Manning looking stunning on a float with a rainbow-coloured heart.

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The tweet said: "Happy first Pride march, Chelsea Manning!"

Manning later clarified it was not her first Pride march, just the first one since her release in May:

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She also posted a picture on Instagram from the march, saying: "Honored to represent the @aclu at this years @NYCPrideMarch lost my voice from screaming so much thank you":

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In the picture, Manning is sitting next to Gavin Grimm, a transgender high school student who sued his local school board for the right to access the boys restroom.

Since her release from military prison in Fort Leavenworth, Kansas, where she served seven years of her 35-year sentence for distributing troves of U.S. military documents to Wikileaks, Manning has been very active on Instagram.

People reacted to the ACLU tweet sending love and praise to her:

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