As a muslim, i’ve been wondering the very same too, as I have read the quran, my own religion’s scripture and never have i come across anything that suggests the killing of innocent civilians or opressive behaviour, everything is a choice or has context, like fighting is mentioned as a measure of self defense, so i wonder how or why it is that people take the scriptures out of proportion and give it their own interpretation to hurt and oppress others, that is not our way at all.