When President Joe Biden signed a bill last year making Juneteenth a federal holiday commemorating the end of slavery in the United States, one woman captured well-deserved attention.
Opal Lee, 94, was described by Biden as the "grandmother of the movement" to make Juneteenth a federal holiday.
And Vice President Kamala Harris, the first Black vice president, also gave Lee her due in her remarks, saying, "And looking out across this room, I see the advocates, the activists, the leaders, who have been calling for this day for so long, including the one and only Ms. Opal Lee.
In 2016, at 89 years old, Lee, a former teacher and lifelong activist, walked from her home in Fort Worth, Texas, to the nation's capital in an effort to get Juneteenth named a national holiday.
Four years later, Lee's activism helped push Congress to establish a new national holiday for the first time in nearly 40 years. In 1983, lawmakers designated Martin Luther King Jr. Day as the third Monday in January to memorialize the assassinated civil rights leader.
"I was overjoyed. I was ecstatic," Lee told ABC News last year" of her reaction to Juneteenth becoming a national holiday. "I was so happy I could have done a holy dance."
Juneteenth -- also known as Freedom Day, Liberation Day and Emancipation Day -- is celebrated on June 19 to mark the day in 1865 when African American slaves in Galveston, Texas, were among the last to be told they had been freed -- a full two-and-a-half years after the Emancipation Proclamation outlawed slavery in the Confederacy and two months after the Civil War officially ended.
To this day, Lee walks two-and-a-half miles each year on June 19 to mark the time between the Emancipation Proclamation and when the news of freedom arrived in Galveston.
Lee said she hopes more people across the country will join her in walking, telling ABC News, "We need to go about the business of everybody participating."
A Texas native, Lee said she experienced racial unrest firsthand during her childhood, including a night, on June 19, 1939, when a group of hundreds of rioters set fire to her family's home.
"The people didn't want us. They started gathering. The paper said the police couldn't control the mob. My father came with a gun and police told them if he busted a cap they'd let the mob have us," Lee told ABC station KTRK-TV in Houston. "They started throwing things at the house and when they left, they took out the furniture and burned it and burned the house."
"People have said that perhaps this is the catalyst that got me onto Juneteenth, I don't know that," she said.
Advocates like Lee say it offers a day to reflect on slavery's terrible stain on American history and for celebrations that look similar to those on the Fourth of July.
The federal government said most employees will be off Friday to mark the occasion, around which celebrations have become more mainstream in recent years, taking on added significance in 2020 when the country went through a racial reckoning after the killing of George Floyd.
Lee said she hopes the federal holiday will help educate people about what happened and "decide that this doesn’t have to happen again." She also hopes Juneteenth will become a day of national unity.
"Juneteenth is not a Black thing and it’s not a Texas thing," she told ABC News. "People all over, I don’t care what nationality, we all bleed red blood."
Editor's note: This report was originally published on June 18, 2021.