Some of the two dozen candidates vying for the 2020 Democratic presidential nomination on Saturday marked the start of LGBT Pride Month with social media posts expressing support for LGBT rights.

Democrats including Sens. Kamala Harris Kamala HarrisHarris faces pivotal moment with Supreme Court battle Nearly 40 Democratic senators call for climate change questions in debates Joe Biden has long forgotten North Carolina: Today's visit is too late MORE (Calif.) and Cory Booker Cory Anthony BookerBipartisan praise pours in after Ginsburg's death DHS opens probe into allegations at Georgia ICE facility Democratic lawmakers call for an investigation into allegations of medical neglect at Georgia ICE facility MORE (N.J.) as well as former Rep. Beto O'Rourke Beto O'RourkeJimmy Carter says his son smoked pot with Willie Nelson on White House roof O'Rourke endorses Kennedy for Senate: 'A champion for the values we're most proud of' 2020 Democrats do convention Zoom call MORE (Texas) tweeted to kick off Pride Month, which is celebrated annually in June.

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Their posts follow a Friday tweet from President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE recognizing Pride Month and the "outstanding contributions" LGBT people have made to the U.S.

Harris called for a renewed "commitment to dignity, acceptance, and equal rights for everyone."

#PrideMonth is a time to proudly celebrate who you are. As we recognize the rich history and contributions of the LGBTQ+ community, let’s renew our commitment to dignity, acceptance, and equal rights for everyone. — Kamala Harris (@KamalaHarris) June 1, 2019

O'Rourke criticized Trump's record on LGBT rights. He also confirmed an announcement that he and his wife, Amy, would run a 5K to celebrate pride.

We just saw the President try to make it harder for transgender Americans to get health care.



As Pride begins — 50 years from Stonewall — we know there is so much progress to celebrate, but so much more to fight for. The work continues, the march goes on, but equality will win. pic.twitter.com/QxayCZkvzU — Beto O'Rourke (@BetoORourke) June 1, 2019

So excited to run with Amy next Saturday in Des Moines as we celebrate Pride! https://t.co/VpVBhLoCZB — Beto O'Rourke (@BetoORourke) June 1, 2019

Booker said he would "continue the work fighting for a future where everyone in this country can enjoy the same ideals of equality." He also promoted pride-themed campaign merchandise.

Happy #Pride Month! This June I’m excited to celebrate our LGBTQ+ friends and community, and continue the work fighting for a future where everyone in this country can enjoy the same ideals of equality. pic.twitter.com/r3lfp94iPN — Cory Booker (@CoryBooker) June 1, 2019

Ready for #PrideMonth? Our team is excited to launch new campaign merch in celebration of #Pride and the LGBTQ+ community → https://t.co/tgVPAFIzHh — Cory Booker (@CoryBooker) June 1, 2019

Like Booker, former Housing and Urban Development Secretary Julián Castro promoted pride-themed T-shirts and stickers.

Hey, y'all means ALL! We're kicking off #Pride month with some new #Castro2020 merch designed by our team and @cruzortizart to celebrate our LGBTQ+ community and an inclusive, people first future for our country.



T-shirts and stickers available >> https://t.co/ItTsHYOTPw pic.twitter.com/G6NYFyI7B1 — Julián Castro (@JulianCastro) June 1, 2019

Sen. Kirsten Gillibrand Kirsten GillibrandSunday shows preview: Justice Ginsburg dies, sparking partisan battle over vacancy before election Suburban moms are going to decide the 2020 election Jon Stewart urges Congress to help veterans exposed to burn pits MORE (D-N.Y.) unveiled an expansive LGBT rights agenda that includes codifying marriage equality and outlawing "conversion therapy."

LGBTQ Americans deserve a president who will always protect their civil rights. Today, I’m sharing my LGBTQ rights agenda to combat discrimination and ensure that every LGBTQ person can live freely and safely in America: https://t.co/Lj23HfEiNx — Kirsten Gillibrand (@SenGillibrand) June 1, 2019