QuoteIncreator didn't say that murder was natural which is what you are implying. I'll bet you did eat yesterday and everyday before that and so directly caused countless organisms to be killed so that you could consume them. Further I'll bet you regularly consume more than (1200 calories/day) what you require to survive. Either you are in denial or just don't care about the killings you commission, which in the latter case would make you a psychopath and a glutton at that...
I never spend money for weapons, nor did I ever kill anybody. So either I'm violating my nature and should recieve a treatment or nature doesn't play a fucking role in people's thoughts.

QuoteI think it's just plain wrong; people are motivated by their emotions and their desire to maintain and improve their well being. The historical meaning of emotion is "to set in motion". In the context of a person's mental states, it's what initiates behavior. The only affect one's culture and societal structure may have is to color one's perception of "well being".
I don't think it's reductive and simplistic to explain human behavior as motivated by the structure of the society they live in...
Here is a link to what appears to be part of a psychology text book that explains this and backs it up with studies and actual data rather than just espousing psychobabble. The first three paragraphs give a pretty good explanation of how behavior is initiated. It's also an interesting read for anyone wanting to implement NPC AI in a game.
http://dionysus.psych.wisc.edu/lit/Topics/Psychophysiology/CacioppoText/Ch.22.pdf
The recent riots can be understood in these terms. The participants were motivated by the opportunity to enhance their "well being" by
1. Experiencing pleasure
2. Acquiring material goods
3. Increasing political power (albeit temporarily)
and because of the lack of fear of the consequences. The lack of fear is due to the relatively mild punishment for such behavior and low likelyhood of any one individual being held accountable ("they can't arrest us all" mindset). So some here advocate a more severe punishment for such activity so as to put more of the participants' "well being" at risk.
Although the ultimate punishment is not appropriate it is sensible to discuss the appropriate consequences of rioting, looting, etc ought to be. It is also foolish and naive to believe that fear of consequences and their severity do not motivate or disincentivize people.