It's worth four minutes of your time...
Political scholars say that Barry Goldwater wouldn't recognize today's Republican party; that he would be appalled at what it has become. I have to wonder if Reagan would be shocked as well.
For a brief yet interesting and informative essay on how the Republican party has morphed, and what role racism has played in the process, I refer you to Lawrence Lewis over at DK.
[h/t Scarce for the YouTube link]