We had a guest speaker yesterday (Sunday, November 28th).
His name is Dr. Lawrence Carter. Here is a link to his bio:
http://www.morehouse.edu/about/chapel/chapel_dean.html
His talk is listed as "Non-Violent Rebel". It can be found here:
http://www.slc-atlanta.org/audio/
I found it to be spot-on and timely.
Update: In the haste to get the file uploaded it's a little off. The talk is actually slightly over 25 minutes. It actually repeats. We'll see if we can't get that fixed.