June 19, 2020 5:14 PM EDT

Communities across the United States marked Juneteenth on Friday, holding vigils, marches, online gatherings and rallies as mass demonstrations against systemic racism and police brutality continued.

Juneteenth commemorates the anniversary of June 19, 1865, the day the Union Army’s Maj. General Gordon Granger rode into Galveston, Texas, and announced the end of slavery, freeing the last enslaved people in the U.S.. Granger reached Galveston two and a half years after President Abraham Lincoln signed the Emancipation Proclamation freeing slaves in the Confederacy — which included Texas — but slavery had continued in Galveston, either because news of the proclamation hadn’t reached the remote city or hadn’t been enforced, Alaina Morgan, assistant professor of history at the University of Southern California, tells TIME.

Since the late 1800s, Black Americans — particularly Black Texans — have commemorated Juneteenth, Morgan explains. The holiday’s popularity spread during the Great Migration and grew around the end of the 20th century after Texas declared the day a state holiday in 1980, she continues.

Despite Juneteenth’s long history, many white Americans are only just now learning of the holiday, as protests over the killing of George Floyd spread around the world and ignited conversations about race and systemic inequality.

“[This year] really hyper local celebrations are breaking out into the mainstream,” Morgan tells TIME. “People are organizing much larger celebrations that engage the entire community and have some kind of educational component behind them.”

Many regularly scheduled Juneteenth events have been forced to go online due to the ongoing coronavirus pandemic. The usual street party outside the Rosa Parks Museum in Montgomery, Ala., for example, will instead be held online, per local news channel WSFA 12.

But many in-person events are still being held in cities across America. In New York City, thousands of people have taken to the streets to demand accountability for police brutality and institutionalized racism.

Demonstrations took place in Chicago, and included appearances from Illinois Gov. Pritzker and Senators Dick Durbin and Tammy Duckworth, per CNN.

Protests also took place in California’s Bay Area, as well as in Washington D.C. and Atlanta.

Students in some states also organized rallies on college and high school campuses.

Prominent politicians also posted in support of the holiday, including former Vice President and current Democratic presidential candidate Joe Biden. “We can’t rest until the promise of this nation is fulfilled,” he tweeted.

Former President Barack Obama and former First Lady Michelle Obama also posted about the holiday.

Some celebrities also commemorated Juneteenth on social media, including actor Idris Elba. Taylor Swift also announced that she was making Juneteenth a holiday for her staff.

President Donald Trump originally scheduled a campaign rally in Tulsa, Oka., on Friday, just blocks from the site of Tulsa’s 1921 Race Massacre. Trump later moved the rally to Saturday “out of respect” for Juneteenth. Since the backlash to Trump’s initial rally announcement, attention to the holiday has only grown.

Many large U.S. companies are recognizing Juneteenth as a paid holiday for their employees, including Best Buy, Lyft, Nike and Target. Other companies — such as Ford Motor and General Motors — are encouraging employees to honor moments of silence. (TIME is observing Juneteenth as a company holiday.)

State and local governments have also taken steps to recognize the holiday. On Wednesday, New York Gov. Andrew Cuomo signed an executive order making Juneteenth a holiday for state employees; New York City Mayor Bill de Blasio also announced Juneteenth would be an official city holiday. And on Friday, Illinois Gov. J.B. Pritzker said he plans to make Juneteenth a state holiday.

A year from now Juneteenth could even be a national holiday. Texas Rep. Sheila Jackson Lee — who has been pushing for national recognition of Juneteenth for decades — has introduced legislation into the House of Representatives to make Juneteenth a federal holiday. Republican Texas Sen. John Cornyn also announced plans to introduce similar legislation into the Senate.

Morgan tells TIME that she hopes state and local governments will continue to take steps to help educate people about the meaning of Juneteenth going forward.

“What I think it is about is the fact that freedom is contingent and it doesn’t come down through simply laws and edicts … it has to be enforced. It has to be fought for,” she explains. “We’re seeing a resurgence of understanding of the fact that freedom, particularly for African Americans, is still precarious.”

Write to Madeleine Carlisle at madeleine.carlisle@time.com.

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