Don't you just love Islamic tolerance?
Nothing new here. During our Civil War, and Islamic extremist who called himself "The Mahdi" arose in what was then called The Soudan, and waged his bloody jihad all the way down into the middle of the Continent of Africa. They were not interested in converting the natives to Islam either. Those who were not sold into slavery were simply slaughtered outright.
This is Mainstream Islam and has been for centuries.