Okay, now I better understand what you are saying. No, I don't think there's a connection here between the Duke case and the Delay and Libby cases. You could claim there are prosecutorial witch hunts in all three but, the political motivation in the Duke case does not appear to be anti-Republican.
Nifong is simply being a populist, responding to what he thinks the public wants (the crowd marching with candles and banging pots), etc. The problem, of course, is you can't easily make what's popular into what is legal - that is, if facts still play a role in deciding the case. More and more, I wonder if our legal system even cares about facts, only outcomes.
No, I wouldn't call this behavior "anti-republican" but I would call it leftist. It has to do with redistribution of wealth/justice/esteem which is the sole goal of the far left. They have out of control prosecutors supported by an embittered populist faction attempting to destroy what they perceive as the dominate culture.