Complex sentence: The dichotomy with which historians view Stephens aside, there is no question that the black population of the time revered him and Sen. Stephens was murdered in the basement of a courthouse by the K.K.K. for his political views and assisting freed slaves.
Split into simpler sentences: The dichotomy with which historians view Stephens aside, there is no question that the black population of the time revered him. The fact remains, Sen. Stephens was murdered in the basement of a courthouse by the K.K.K. for his political views and assisting freed slaves.