The History of Gerrymandering 

There have been several mentions of gerrymandering on this blog, but for some in-depth historical background, you can to to a New York Times retro report on the subject and learn its relationship to an attempt to ensure that minorities, especially black Americans, could be elected. 11 min, 36 sec, no transcript, but the video is accompanied by a long newspaper article. You can also turn on the subtitles.