Re: Bin Laden has been killed?
As far as I have understood, Osama bin Laden has been more like a scary comics figure for many americans (especially those who were, for example 10 year old in 2001). In a sense I understand the jubilation. The symbol for the evil is gone, but the threat of terrorism is, of course, more alive than ever.
About the legal/political/ethical considerations, here is what Noam Chomsky thinks – http://www.guernicamag.com/blog/2652/noam_chomsky_my_reaction_to_os/
And for some balance one should perhaps read what Cristopher Hitchens writes in response – http://www.slate.com/id/2293541/
In any case, I think generally this case will have deteriorating effect, because it "justifies" targetted killings by countries who are powerful enough to impose their will on others. It is well known that US has been doing drone attacks in Pakistan before and is doing it now as well.
And here is one recent example how criminals like bin Laden should be treated – http://www.baltictimes.com/news/articles/28682/