Multiple Democratic presidential candidates tweeted in support of Transgender Day of Remembrance on Wednesday.

Among those to tweet were former Vice President Joe Biden Joe BidenFormer Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick Bloomberg rolls out M ad buy to boost Biden in Florida MORE, Sens. Elizabeth Warren Elizabeth WarrenOvernight Defense: Appeals court revives House lawsuit against military funding for border wall | Dems push for limits on transferring military gear to police | Lawmakers ask for IG probe into Pentagon's use of COVID-19 funds On The Money: Half of states deplete funds for Trump's 0 unemployment expansion | EU appealing ruling in Apple tax case | House Democrats include more aid for airlines in coronavirus package Warren, Khanna request IG investigation into Pentagon's use of coronavirus funds MORE (D-Mass.), Bernie Sanders Bernie SandersSirota reacts to report of harassment, doxing by Harris supporters Republicans not immune to the malady that hobbled Democrats The Hill's Morning Report - Sponsored by Facebook - Republicans lawmakers rebuke Trump on election MORE (I-Vt.), Cory Booker Cory Anthony BookerThe movement to reform animal agriculture has reached a tipping point Watchdog confirms State Dept. canceled award for journalist who criticized Trump 3 reasons why Biden is misreading the politics of court packing MORE (D-N.J.), Kamala Harris Kamala HarrisTexas Democratic official urges Biden to visit state: 'I thought he had his own plane' The Hill's Campaign Report: Biden on Trump: 'He'll leave' l GOP laywers brush off Trump's election remarks l Obama's endorsements A game theorist's advice to President Trump on filling the Supreme Court seat MORE (D-Calif.), former Housing and Urban Development Secretary Julián Castro and South Bend, Ind., Mayor Pete Buttigieg Pete ButtigiegBillionaire who donated to Trump in 2016 donates to Biden The Hill's Morning Report - Sponsored by Facebook - GOP closes ranks to fill SCOTUS vacancy by November Buttigieg stands in as Pence for Harris's debate practice MORE.

Several of the candidates referenced the fact that 22 transgender Americans have been killed this year.

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In 2019, at least 22 transgender Americans—mostly Black trans women—have been targeted and murdered. We can never stop saying and remembering their names.



On Transgender Day of Remembrance, we must recommit to seeking justice for the lives taken and ending this epidemic. #TDOR — Kamala Harris (@KamalaHarris) November 20, 2019

At least 22 transgender and gender non-conforming people have been killed in America this year. Tonight, I’m thinking of them and those whose deaths may never be reported. We must all commit to building a country where transgender Americans are safe, equal, and free. https://t.co/mUfDdBLWCD — Pete Buttigieg (@PeteButtigieg) November 20, 2019

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On this Transgender Day of Remembrance, we honor the memory of those we’ve lost—at least 22 trans and gender non-conforming people killed this year—and recommit to ridding this hate-filled violence from our society. Everyone deserves to live open and proud and free without fear. — Joe Biden (@JoeBiden) November 20, 2019

On Transgender Day of Remembrance, we #SayTheirNames, and we re-commit to ending this epidemic. #TDoR https://t.co/6mTLM2grTq — Elizabeth Warren (@ewarren) November 20, 2019

Castro stated that "91% of murdered transgender people are Black trans women," and "34% of Black trans women live in extreme poverty."

91% of murdered transgender people are Black trans women.



34% of Black trans women live in extreme poverty.



We need to alleviate their struggle to make ends meet—see their humanity— and take action to end the violence they face.#TransDayofRemembrance https://t.co/tQlBAha2qu — Julián Castro (@JulianCastro) November 20, 2019

"Hateful acts of anti-trans violence have claimed far too many lives—many whose names we’ll never know," Booker said in his tweet.

"Today we honor them," he continued. "To those who continue to face discrimination & violence due to transphobia: I see you, I love you, & will never stop fighting for you."

Hateful acts of anti-trans violence have claimed far too many lives—many whose names we’ll never know. Today we honor them. To those who continue to face discrimination & violence due to transphobia: I see you, I love you, & will never stop fighting for you. #TDoR2019 — Cory Booker (@CoryBooker) November 20, 2019

Transgender Day of Remembrance was first observed in 1999 by transgender advocate Gwendolyn Ann Smith to honor Rita Hester who was killed in 1998. The day is the culmination of Transgender Awareness Week.