I would like to add an incident related of Hz Ali Rz, Once during a battlefield, Hz Ali Rz. almost succeeded in bringing the enemy down. He was on the chest of the enemy and would have killed him with his sword. At that point the enemy spitted on Hz Ali's face. Hz Ali Rz dropped his weapon and started turning away from the enemy. Then enemy said, "I spit on you because I wanted you get angry and cut my throat fast.", Hz.Ali Rz. replied, I was fighting for the sake of Allah, if I would have killed you after you spit on me it would have become a personal revenge and not for the sake of Allah.
There is fine line between personal revenge and doing something for the sake of Allah and we can see this thru this incident of a very brave man Islam had ever had. If people realize this difference there will not be so much Islamopobia and hatred towards Islam in this world.