Well, there's plenty of reasons, and when I say ''plenty'', trust me, I mean it. Some I can think of are, Illiteracy, Lack of persecution of Law, Massive Poverty, Extremism and what not?
Let me give ya a little example, Back when I was 16 or so, I was driving in morning and the roads were wet due to rain, so I crossed these 2 Motor-cycles with 2 men on each, so since the roads were wet, some of the water was splashed on their Pants as I overtook 'em. and I stopped on a red light a mile or so ahead, unaware of what I had done. So when I stopped, these 4 men approached me, opened the door of my car, and there I was, a teenager getting the beating of my life from 4 men, infront of tons of people, including a traffic police officer. I apologized, but since I wasn't crying or screaming, they thought I wasn't hurt, but When I began bleeding, they got scared and fled the scene. So that should give you an idea of how extreme our society is almost on everything.