Illinois Channel has a program about the 1908 race riots in Springfield, Illinois. This occurred over a decade before a much more well known race riot in the city of Chicago in 1919. Of course while you can watch this program online at the Illinois Channel website you can watch this on TV as well, especially if watching videos on your PC isn't your speed.
If you're in the city of Chicago you can watch Illinois Channel programming on Saturday mornings from 9AM to 11AM on CAN-TV channel 21 and Sunday mornings from 8:30AM to 10:30AM on CAN-TV channel 19.
And I would like to offer a special thanks to Illinois Channel Executive Director Terry Martin for putting this on the program schedule for this week.
EDIT: I've updated the link to the program about the Springfield race riots.