Transcript for Meet Opal Lee, the Juneteenth ‘grandmother of the movement’
Finally tonight, "America strong." The grandmother of juneteenth. Reporter: Tonight, Americans across the country honoring juneteenth. Volunteers planting flowers in Pittsburgh. Students gathering at the capitol in Madison, Wisconsin. Juneteenth the first federal holiday to be named since martin Luther king Jr. Day in 1983, and remembers freedom day, when federal troops set free the last remaining troops in America in galveston, the, who had no ideas they had been freed years before. One of the Americans fighting for this recognition, 94-year-old Opal Lee of Texas. Her home set on fire by rioters on juneteenth, 1939, so for years now she's been walking two miles. Speaking before lawmakers, petitioning congress, delivering more than 1.5 million signatures to make it a holiday. Even walking an astonishing 1,400 miles from her home in Texas to Washington, D.C. For four months to plead her case. I'm really a little old lady in tennis shoes getting in everybody else's business, and I'm having a good time doing it, too. Reporter: And this week when president Biden signed juneteenth into law, Opal Lee was right there. Kamala Harris, the first black vice president holding her hand. The president inviting her to the white house, kneeling before her. She's made it her mission to see that this day came, to make this day possible. Reporter: Tonight, Opal Lee and her message. I just know that the time has come for us to work together. It sure has. An amazing woman. Be sure to watch tonight, "Juneteenth together we triumph". It airs tonight at 9:00 P.M. Eastern here on ABC. I'm whit Johnson in New York. Have a great night.
This transcript has been automatically generated and may not be 100% accurate.