You will complain about sharia and ISIS, yet Christians have done awful things to unbelievers. Have you heard of the Inquisition and witch trials? Have you heard of Westboro Baptist Church, George W. Bush, and abortion clinic bombings? Here in France, Charlemagne crusaded against the Saxons and other heathen tribes and converted them by the sword. Later on this Christian nation invaded and colonized huge areas of Islamic land in the Middle East starting with Algeria. This went on for 150 or so years.
I don't see how anyone can claim Islam has some unique monopoly on brutality and repression of unbelievers.
