
Supporters of LGBT rights mobilized for marches and rallies Sunday in Washington DC and other cities across the country, celebrating their gains but angered over threats to those advances.

The centerpiece event, the Equality March in Washington, was endorsed by virtually every major national advocacy group working on behalf of lesbian, gay, bisexual and transgender Americans.

Leaders of those groups have been embittered by several actions of President Donald Trump's administration - including the rollback of federal guidance advising school districts to let transgender students use the bathrooms and locker rooms of their choice.

The activists also complain Trump has stocked his administration with many foes of LGBT-rights advances, including Vice President Mike Pence, Attorney General Jeff Sessions, and Health and Human Services Secretary Tom Price.

A large rainbow flag is seen flying in front of the White House on Sunday as thousands march for LGBT rights in the nation's capital

Demonstrators hold up a rainbow flag as they march outside of the White House during the The Equality March for Unity & Pride parade on Sunday

Throngs of marchers, many thousands strong, paraded past the White House and toward the Capitol, trailing behind a giant rainbow flag near the head of the procession.

'We're here, we're queer, get that Cheeto out of here,' was among the chants directed at Trump.

For the LGBT community nationwide, it's an emotional time. Monday is the anniversary of the mass shooting a year ago in Orlando, Florida, that killed 49 people - mostly Latinos - at Pulse, a gay nightclub.

Among the marchers in Washington was Gil Mendez, a Puerto Rican native who traveled with his partner all the way from San Francisco to join the parade.

A demonstrator holds up a rainbow flag as people march outside of the White House during Sunday's event in Washington DC

LGBT members and their supporters take part of the Equality March for Unity & Pride parade outside of the White House on Sunday

Members of the Equality March hold a sign outside the White House on Sunday morning as another raises his fist in the air

LGBT members and their supporters take part of the Equality March for Unity & Pride parade outside of the White House

A man is seen carrying a sign with a picture of Donald Trump on it during the demonstration in Washington DC on Sunday morning

A demonstrator with his face painted is seen holding a pink wrap behind his shoulders during Sunday's march in DC

He carried a sign that included the names of all the Pulse victims.

'The arrack on Pulse really struck me hard,' he said. 'It made the connection between the physical violence of guns and the political attacks on our community.'

Also marching, and singing freedom songs along the way, was Gregory Elfers of Teaneck, New Jersey, who was with fellow members of the New York City Gay Men's Chorus.

'It's an opportunity to tell everyone we're still here, and we're not going away at all,' he said.

Roughly 100 marches and rallies were planned across the US, from Portland, Maine, and Boston to Anchorage, Alaska, and Honolulu.

There was another rally in Los Angeles on Sunday, and people are pictured marching in the streets downtown

People are seen during the Resist March in Los Angeles on Sunday morning. The event replaced the annual Pride Parade for 2017

Miguel Luevano of Pasadena holds a Donald Trump pinata during the Resist March on Sunday morning in Los Angeles

More than 100,000 people were expected to turn out in Los Angeles where the annual Pride Parade was renamed the ResistMarch.

Many people in LA were carrying LGBT-rights signs and flags, but other groups joined in on the march as well.

The Los Angeles Times reports women were seen wearing pink p**sy hats, others were motivated to march because of Trump's approach to immigration and climate change, while a young boy held a sign reading: 'Love Trumps Hate.'

Speakers at the Los Angeles event included Mayor Eric Garcetti, while Maxine Waters, Adam Schiff and Nancy Pelosi were also seen in the crowd.

Los Angeles Mayor Eric Garcetti addresses the crowd before the Resist March on Sunday morning in the city

Minority Leader Nancy Pelosi is pictured walking among the crowd for the march in Los Angeles on Sunday June 11

Adam Schiff also took to the street in California to be part of the march, and tweeted out this message after doing so

Activists in Casper, Wyoming, planned that city's first-ever pride parade.

Among the activist leaders on hand in Washington was Sarah Kate Ellis, president of GLAAD, which monitors media coverage of the LGBT community.

She noted that Trump, breaking from the practice of Barack Obama, has declined to issue a proclamation in honor of Pride Month, and that the Trump administration has deleted questions about sexual orientation from planned federal surveys.

'If you look at their prioritization, we're really low on it,' she said. 'There absolutely is a resistance aspect to this march.'

One of the marchers at Sunday's demonstration in Washington DC holds a sign in the air criticizing the president's daughter, Ivanka

Supporters are pictured waving a huge rainbow flag during Sunday's pro-LGBT rights march in Washington DC

Three protesters are pictured on Sunday morning during the march carrying signs that have 'Resist' written on them in DC

Marchers are seen during the demonstration on the streets of Washington DC for LGBT rights on Sunday morning

One of the protesters in Washington DC on Sunday is pictured carrying a sign during the march that reads: 'Not my Cheeto'

A crowd of marchers is pictured in Washington DC on Sunday morning while another man carries a sign during the event

A female protester during Sunday's demonstration holds a sign in the air that reads: 'I love my son and his husband'

LGBT members and their supporters take part of the Equality March for Unity & Pride parade downtown Washington DC on Sunday

A protester walks down the street during the march in Washington DC holding a sign that reads: 'My lady parts do not define me'