If that was your history, you'd say that too.
The Democrats who became Republicans accepted our view. The ones who remained Democrats are to this day obsessed with race politics.
Show the democrats this web site and ask them exactly when did the Democrats and Republicans switch and where is the documentation that anything like that happened? Why did Senator Byrd never renounce being a Grand Kleagle of the KKK?
http://www.black-and-right.com/the-democrat-race-lie/