There is a direct relationship to being a Jihadist (meaning a “radical” Jihadist which is redundant)and ones strength of belief in Islam. The stronger the belief that Mohammad gave them the exact word of what God (there Allah) wanted them to do, the more likely they belief that they must kill anyone that doesn’t become a Muslim. That also gives them the “right” to rape behead plunder and do every other 7th century evil that most of the rest of us have given up. There has never been a more barparic belief system in the world.