I dont want to distinguish between intentional and not knowing. YOU brought up not knowing. What I said was distinguish between intentional and ACCIDENTAL life taking i.e I am driving at 80 km/h (as is the law) and my front tire burst, causing my car to spin out of control. Should I be executed? I don't think so. Some might argue.

As to the cultural comment: Name me ONE culture where rape and murder is culturally acceptable.