BP

First Matt Simmons...

https://secure.wikimedia.org/wikipedia/en/wiki/Matthew_Simmons

Now another death of a witness:

http://www.youtube.com/watch?v=x4-7lgxATiU&feature=player_embedded

If you haven't read 'Confessions of an Economic Hit-man', by John Perkins, I recommend it. Here he talks about his motivations...

http://www.youtube.com/watch?v=yTbdnNgqfs8