The Bilderberg Group from what I have read in reliable sources such as The Guardian etc, holds meetings in secret at which new up and coming people (politicians, writers, opinion formers) are invited. People of different political persuasions are apparently invited and - as far as I can deduce from what I have read - attempts are made (not in an obviously sinister fashion but by flattery and persuasion) to draw them into this global hedgemonic thinking.
In short - anyone with any radicalism that threatens the global interests of the powerful will be destabilised. Why do you think the media are so strong against any labour leader (Kinnock, Foot, Corbyn) who appears to threaten this, whereas with a safe Bilderberg type of leader like Healey (even though he wasn't ever labour leader) or Blair weren't?
I think the problem sometimes with starting down the conspiracy route is that often people start to only see what fits the theory or bend what doesnt until it does fit.
For example in the two paragraphs above. My first thought is always to play devils advocate. Im not assuming you are stating as fact all you are posting, but just responding to what yoive written.
If there were so many meetings with invitations to people from different walks of life, would there not be a strong likelihood that we would have a lot of stories out there from people who attended them? Would it not be very likely it would be a lot more of a FACT right now rather than a secret or a conspiracy? The probabilty should be high on this if so many different types of people attend.
On the second you do seem to state this as something you strongly believe in. Could it not be simply that the politicians mentioned believed in policies which went against that of those who hold the purse strings and ultimately the power in the major media outlets? They then use that power to influence how government policy might go. I think is something most people would agree is a done thing, but what suggests that it goes a level above that and a secret society decides who is and isn't targeted? (there were many Pro Corbyn articles on the Guardian for example, and although greatly outnumbered by those against there was still enough of both points of view being aired there to make it difficult to see a complete media whitewash)
I dont hold a strong view either way, but find the way that people approach and discuss these things very interesting.