"What possible relevance is it to today's issues?"

While searching for what happened in 1952. I found that factiod which is apparently more relevant to todays issues than the happening in 1952 referred to in Amos's post.

Democrats rankle whenever they are reminded of their murderous past and immediately start talking about Republicans.

If what happened is 1952 is relevant, let's have some more details. What happened in 1952 that relates to this topic.

"a large number of them became Republicans" How many? Who were they?