we were a slave republic of white male property owners over the age of 21. but it's been through these successive movements for democratic enlargement that the constitution has become better and we've become a more perfect union. a great marylander, frederick douglass said, "if there is no struggle, there is no progress. "power concedes nothing without a demand. it never has, and it never will." (crowd cheering) thank you for organizing. black lives matter! man: black lives matter! woman: black lives! crowd: matter! woman: thank you so much. ♪ reporter: not only may this actually be the most important election in our lifetime, it certainly will be the most unusual. ♪ reporter: states across the country are turning to mail-in voting in this election in an effort to allow americans to vote safely during the pandemic. holt: while most americans support the option of mail-in balloting,