“Get it all on record now - get the films - get the witnesses - because somewhere down the track of history some bastard will get up and say that this never happened.” - Dwight D. Eisenhower 1945
The image is a black and white photo of a large pile of human skulls and bones in front of a barbed-wire fence.
The parties did switch but it’s more complex than a black/white thing since political ideas have changed over the past 100 years. And as such, comparing is political parties of the current time to those of 180 years ago is absurd.
Dixiecrats switching to republicans is definitely a real thing and it happened around the 50s and 60s. In any event, which political party likes confederate flags is a decent question at this point. The party of Lincoln? That would be odd.