The Desire to Kill

I just got done watching the video where former president Clinton was involved in his combative interview with the fox reporter and it seems now that there is an argument between the left and right camps about who has done what in their attempts to kill Bin Laden. This, to me, is a symptom of the problem, not just with politics in this country but the nation's prevelent mindset. Politicians in today's America are deeply concerned about killing terrorists but there is no move that I'm aware of to make peace. If it were just the politicians it could be understood to a certain degree but the rank and file American seems to want to kill those whom they disagree with. When the Dixie Chicks came out against the war they recieved death threats. Some people really wanted them dead. Anti-racists want their opposite number, neo-nazis to be destroyed. White supremicists want jews wiped out. Jews want arabs and "nazis" killed. There are rap songs too numerous to mention that glorify killing, especially white people. None of these groups has any inclination to engage in dialogue and make peace. There are groups outside of the US who have the same problem. A good example are the Muslims who want anyone who "blasphemes" Islam killed.
On the other side of the coin, you don't generally hear about Europeans or Canadians wanting anyone dead. In Europe, the worst you will hear is that some want the immigrants to go home. When the Muslims started attacking Denmark and her interests, there was no violent retaliation from Denmark. You never hear of China or Japan wanting to kill anyone. China may have it's issues with Taiwan but they don't want to wipe out the entire population of that country. Venezuela certainly has it's issues with the US at this time but they're not advocating killing Americans (of course, to be fair, we're not advocating killing Venezuelans either).
I suggest that there is a level of maturity that goes with being able to disagree with people, sometimes strongly, without wanting to kill them. There are many people in developing countries that have not reached that maturity but, it seems to me, that's what comes with "developing" status. So, my question is, what's our excuse?