You can just say that there are sometimes, some angry and confused people out there who like to cause trouble, start fights, wars, etc. Then, You can pass this quote on:
"As a Tsalagi Elder I would like to say that it makes no difference what color your skin is or what your beliefs is,it only matters as to how you treat people in this life, we are all the same, we all have the same desires and the same goals and that is to be good people and treat one another fairly and with respect, there is an old saying about war. War does not determine who is right. War merely determines who is left. We must learn to have respect for one another and for each other's beliefs."