Sabrina, if you're expecting some miracle evidence to present itself, don't hold your breath, just go away from this thread.
Better yet, take a deep breath and try to remain objective in light of your overwhelming emotion...
Paraphrasing the entire Elitist sociological tradition, those who qualify (although each social scientist would have their own specific criteria) as global elites are, simply put, the highest of the economic elites who hold power and influence outside their specific economic forums. These individuals are able to influence public policy in many ways; and it's been extensively studied by many sociologists; think....how could someone with tremendous economic power bypass democratically defined spheres of influence? Now start thinking about all the summits and forums going on behind closed doors all over the world. Where did the term 'backroom deal' come from?
If you wanted to independently learn more about Elite Theory. I would start by studying the original works of CW Mills, John Porter's Verticle Mosaic, then Wallace Clement's excellent book, The Canadian Corporate Elite. (bit of a Canadian influence to this research lineup.....)
Anyway, certain individuals around the world qualify as Global Elites, rather than just elites, due to the rise in MNC's and the rapid pace of globalization. To deny this is just plain silly. Now if you have a specific question in regards to my definition of this group....pose away.