How do more people not know the connections between the Democrats and the KKK? How many are unaware that Republicans too had their share? How many people are willing to completely disregard an entire side of such truths? 

During a recent exchange, I brought up a point as context and the entirety of my discussion was discounted as a result. While unfortunate, there is an insight to be gained from it. Some of us may wonder why certain truths escape the masses. Does this insight tell us how?