4 August 1901: Louis Armstrong was born in New Orleans, Louisiana.
Here’s a photograph by John Leongard: ‘Rear view of jazz trumpeter Louis Armstrong waving to a crowd of adoring fans as their applause rolls over him.’ 

Some of you young folks been saying to me, “Hey Pops, what you mean ‘What a wonderful world’? How about all them wars all over the place? You call them wonderful? And how about hunger and pollution? That aint so wonderful either.” Well how about listening to old Pops for a minute. Seems to me, it aint the world that’s so bad but what we’re doin’ to it. And all I’m saying is, see, what a wonderful world it would be if only we’d give it a chance. 
Spoken intro to “What a Wonderful World” (1970 version)