'Human Nature'

I have been moved to write a few deep thoughts of mine about the nature of Homo Sapiens.
Disclaimer:if anyone recognises themselves as having influenced this post, let no offense be taken!
Too often, one hears the phrase "It's human nature" or a variant of the "Humans will destroy the earth" kind. I'll be brief:it's a cop out. Either that or it's an attempt by those whom it best serves at 'brainwashing' the masses.
Personally, I don't buy the 'human nature' explanation. I am a human(or so it would seem). Yet, I do not view myself as one intent on destroying the MOTHERSHIP in order to satisfy my own greed. As far as I can remember, I have never picked up a weapon and lunged at my fellow human beings, and I certainly have never declared pre-emptive war on some guy/girl down the street 'cos he/she wouldn't play by my rules after I'd helped he/she beat up his/her neighbour.
What's more, I am a human being, and I am capable of rational thought. This means I am able to see the difference between what is right and what is wrong. I know that it is wrong for me to hate someone because they are of a different colour, religion, culture, birthplace or whatever. I know it is wrong to beat someone up because they don't live on my side of town. I know that ideally we would all live in harmony respecting each other's choices, tastes and opinions. In addition to that, I know many people who can see the difference between what is right and what is wrong. What I cannot understand is why among these people some continue to talk about 'human nature' being the root of all evil.
The war in Iraq was started by the US and UK governments with the help of big oil-not by the human race.
The Iran-Iraq war was a war between two sets of fanatical(in different ways)dictators-not by ordinary Iranians and Iraqis, and most definitely not by the human race.
Six million(give or take a few)jews were gassed by the Nazis, not by the german people, and not by the human race.
Need I go on ad vitam eternam?
I think the point I am trying to make is this: there are people who are responsible for atrocities and the destruction of our environment. We, the people are responsible for demonstrating our disaproval, and doing all we can to stop the pain, misery and environmental destruction going on around us, but we as humans are not responsible for the acts. There is much opposition to the evil powers that be, much of it in Britain and America.
It is all too easy and at the same time it is a magnificent gift to the elites to blame all the world's problems on 'human nature'.