Beyoncé urged black communities to vote in the upcoming US elections, as she accepted an honour for her humanitarian work at the BET Awards.
Dedicating her award to protesters around the country, the star said: "You're proving to our ancestors that their struggles were not in vain."
"I'm encouraging you to continue to take action, continue to change and dismantle a racist and unequal system.
"We have to vote like our life depends on it, because it does."
Beyoncé was presented with her award by Michelle Obama, who praised the star's commitment to the black community.
"You can see it in everything she does, from her music that gives voice to black joy and black pain, to her activism that demands justice for black lives.
"And she's doing it all while staying devoted to her children and the loved ones she holds dear," she continued. "To my girl, I just want to say - you inspire me. You inspire all of us."
The BET Awards celebrate black artists and sports personalities. Previous recipients of the ceremony's humanitarian award include boxer Muhammad Ali, music producer Quincy Jones and civil rights leader Rev. Al Sharpton.
The deaths of George Floyd and Breonna Taylor, as well as the ongoing Black Lives Matter protests, were reflected throughout this year's ceremony.
DaBaby, who won best male hip-hop artist, re-enacted the last moments of Mr Floyd's life, rapping his hit Rockstar with his face pressed against the ground as a police officer knelt on his neck.
The performance also featured images from protests, as dancers held signs that said "Black Lives Matter" and "Defund The Police", as the rapper and Roddy Ricch danced on top of police cars.
Twelve-year-old Keedron Bryant, who went viral on social media with a song about his fears of being a young African-American, opened the show with an a cappella performance of the poignant track, I Wanna Live.
That was followed by an all-star performance of Public Enemy's 1989 anthem Fight the Power, featuring Nas, YG, The Roots' Black Thought, and Rapsody.
Jennifer Hudson delivered a gospel rendition of Nina Simone's Young, Gifted and Black, while Alicia Keys performed a haunting version of her new single A Perfect Way To Die.
The star was seen playing the piano in a deserted city, surrounded by murals to Floyd, Taylor, Ahmaud Arbery and Sandra Bland.
As the song ended, she stood up from her piano and knelt on the street, which had been stencilled with names of dozens of black men and women whose lives have been lost to racism and police brutality.
This year's BET Awards were a virtual event because of the coronavirus pandemic, and the performances and speeches were pre-taped, allowing for dramatic stagings and high production values.
Wayne Brady paid tribute to rock and roll pioneer Little Richard, with an energetic medley of Lucille, Good Golly Miss Molly and Tutti Frutti.
Afterward, Lil Wayne paid tribute to basketball legend Kobe Bryant, who died in a helicopter crash earlier this year.
Award recipients included Lizzo, who was named best female R&B/pop artist, beating Beyoncé, who has won the category 10 times, including the last six years in a row.
Image copyright Getty Images Image caption Simone Biles was named sportswoman of the yearMegan Thee Stallion won best female hip-hop artist, after facing down a challenge from two former winners, Cardi B and seven-time champion Nicki Minaj.
Chris Brown won best male R&B/pop artist for a record fifth time, while Michael B. Jordan picked up his third best actor trophy - tying him with Denzel Washington for the most wins in the category.
Beyoncé's eight-year-old daughter Blue Ivy Carter was also a winner, picking up an award for her contribution to the song Brown Skin Girl, from her mother's Lion King album.
And gymnast Simone Biles - who recently debuted a never-before-seen triple-twist, double back dismount from a balance beam - won sportswoman of the year for the first time.
She beat tennis legend Serena Williams, who had won 12 times in the category, including the last six years in a row.
Full list of winners - BET Awards 2020
BEST FEMALE R&B/POP ARTIST
Beyonce H.E.R. Jhene Aiko Kehlani Lizzo - Winner Summer WalkerBEST MALE R&B/POP ARTIST
Anderson Paak Chris Brown - Winner Jacquees Khalid The Weeknd UsherBEST GROUP
Chloe X Halle City Girls Earthgang Griselda Jackboys Migos - WinnerBEST COLLABORATION
Chris Brown Ft. Drake: No Guidance - Winner DJ Khaled Ft. Nipsey Hussle & John Legend: Higher Future Ft. Drake: Life Is Good H.E.R. Ft. YG: Slide Megan Thee Stallion Ft. Nicki Minaj & Ty Dolla $ign: Hot Girl Summer Wale Ft. Jeremih: On ChillBEST MALE HIP HOP ARTIST
DaBaby - Winner Drake Future Lil Baby Roddy Ricch Travis ScottBEST FEMALE HIP HOP ARTIST
Cardi B Doja Cat Lizzo Megan Thee Stallion - Winner Nicki Minaj SaweetieVIDEO OF THE YEAR
Chris Brown Ft. Drake: No Guidance DaBaby: Bop DJ Khaled Ft. Nipsey Hussle & John Legend: Higher - Winner Doja Cat: Say So Megan Thee Stallion Ft. Nicki Minaj & Ty Dolla $ign: Hot Girl Summer Roddy Ricch: The BoxVIDEO DIRECTOR OF THE YEAR
Benny Boom Cole Bennett Dave Meyers Director X Eif Rivera Teyana "Spike Tee" Taylor - WinnerBEST NEW ARTIST
Danileigh Lil Nas X Pop Smoke Roddy Ricch- Winner Summer Walker YBN CordaeALBUM OF THE YEAR
Cuz I Love You: Lizzo Fever: Megan Thee Stallion Homecoming: The Live Album: Beyonce I Used to Know Her: H.E.R. KirK: DaBaby Please Excuse Me For Being AntisociaL: Roddy Ricch - WinnerDR. BOBBY JONES BEST GOSPEL/INSPIRATIONAL AWARD
Fred Hammond: Alright John P. Kee Ft. Zacardi Cortez: I Made It Out Kanye West: Follow God Kirk Franklin: Just For Me - Winner Pj Morton Ft. Le'Andria Johnson & Mary Mary: All In His Plan The Clark Sisters: VictoryBEST ACTRESS
Angela Bassett Cynthia Erivo Issa Rae - Winner Regina King Tracee Ellis Ross ZendayaBEST ACTOR
Billy Porter Eddie Murphy Forest Whitaker Jamie Foxx Michael B. Jordan - Winner Omari HardwickYOUNGSTARS AWARD
Alex Hibbert Asanta Blackk Jahi Di'Allo Winston Marsai Martin - Winner Miles Brown Storm ReidBEST MOVIE
Bad Boys For Life Dolemite Is My Name Harriet Homecoming: A Film by Beyonce Just Mercy Queen & Slim - WinnerSPORTSWOMAN OF THE YEAR
Ajee Wilson Claressa Shields Coco Gauff Naomi Osaka Serena Williams Simone Biles - WinnerSPORTSMAN OF THE YEAR
Giannis Antetokounmpo Kawhi Leonard LeBron James - Winner Odell Beckham Jr. Patrick Mahomes II Stephen CurryBET HER AWARD
Alicia Keys: Underdog Beyonce Ft. Blue Ivy Carter, Wizkid & Saint Jhn: Brown Skin Girl - Winner Ciara Ft. Lupita Nyong'o, Ester Dean, City Girls & La La: Melanin Layton Greene: I Choose Lizzo Ft. Missy Elliott: Tempo Rapsody Ft. PJ Morton: AfeniVIEWER'S CHOICE AWARD
Chris Brown Ft. Drake: No Guidance DaBaby: Bop Future Ft. Drake: Life Is Good Megan Thee Stallion Ft. Nicki Minaj: Hot Girl Summer - Winner Roddy Ricch: The Box The Weeknd: HeartlessBEST INTERNATIONAL ACT
Burna Boy (Nigeria) - Winner Innoss'B (DRC) Sho Madjozi (South Africa) Dave (UK) Stormzy (UK) Ninho (France) S.Pri Noir (France)VIEWER'S CHOICE: BEST NEW INTERNATIONAL ACT
Rema (Nigeria) Sha Sha (Zimbabwe) - Winner Celeste (UK) Young T & Bugsey (UK) Hatik (France) Sracy (France)Follow us on Facebook, or on Twitter @BBCNewsEnts. If you have a story suggestion email entertainment.news@bbc.co.uk.