Hey, Audi Cornish here and it's Sunday, so we have a bonus episode for you.

For the past few weeks, our colleagues at NPR's Thru Line podcast have been profiling

black visionaries.

And their names may not be familiar, but each of them helped imagine new worlds for black

people.

Here's Thru Line host Romteen Arablui and Runda Abdelphata with one of those stories, the

man behind the march on Washington.

Freedom now movement, hear me, we are requesting all citizens to move into Washington, to go

by plane, by car, bus, to where we didn't.

50,000 people, black and white, marched on the nation's capital.

Nationalized this southern freedom struggle, it was really glorious.

August 28th 1963, the march on Washington, lives in many of our minds as a single moment,

a single voice, a single dream.

I have a dream, one thing.

But what you probably don't know, there's a man standing behind Martin Luther King Jr.

as he's making this speech, just a few feet to his right.

He's tall, thin, wearing thick, black-frame glasses.

And this moment would never have happened without him.

His name?

By a-by a-by a-by a-brustin.

I'm Romteen Arablui.

I'm Runda Abdelphata.

...