Hi There. first of all sorry for the late reply. I've just been going thru a backlog of unread messages. thanks for the comment. i appreciate and enjoy discussions like this.
Id like to say that my views have slightly change since i wrote this about 5 years ago, but is still the same in principle.
Though most of laws today are based on morals and i can say man made to a degree, there are things like starvation, trauma, emotional pain, physical pain, and a lot of other basic stuff that aren't man made. we all have a choice to remedy those things caused by imbalance. and i think that imbalance is the evil that i am talking about here. imbalance such as greed, social injustice, apathy, lack of education and lots of other real things happening around. those 'events' you have mentioned could have been avoided. We can learn from history. and we have a choice to make them happen again or avoid it, and so did the people who caused those events. in this present time, lets say you are a leader and you want to empower your country, and you think that exterminating a race of people would help, would you do it?
anyway, this good vs evil thing is all too generalised topic, we can just go to a more basic level like your neighbourhood or your family. though you might say we don't need laws to be good to our neighbours, true but still you have a choice to treat your neighbours well or unwell. treating our neighbours well always bear good fruit dont you think?