Stringsinger, what makes you think that Americans don't know about Blackwater? They are on the news all the time, after all.

And, btw, they are security guards. They do not work for "a minority of weathy (sic) business interests," but rather for anyone who wants to hire them, including members of the Iraqi government and nongovernmental organizations in Iraq.   Please provide your documented source for the statement that they are assassins.