Who Give a brief description of what a sundown town was?

Sundown towns existed to rid the town of all blacks by sundown. They existed in predominately white areas. There was a siren that informed everyone of the time coming. This informed all blacks to leave immediately.

For a list of all of the sundown towns in America here is a very useful website!

http://sundown.afro.Illinois.edu/content.php?file=sundowntowns-whitemap.html