Evidence of how the Fed can manipulate silver market?

[silverpenguin]

Hi Brother John,

Your channel is great, and I enjoy listening very much. Thank you.

But recently a good friend of mine has raised doubts in my mind, about silver being a manipulated market. (price suppressed)

From my limited understanding/wikipedia reading (I am U.K. national not U.S. citizen):
The Fed is controlled by a board of governors who are directed by congressional legislation which are public documents. So how can the Fed people be working a secret agenda when they are public officials guided by congressional legislation? Are their activities not overseen and scrutinised (preventing manipulation) ?

I do hope my question makes sense. Perhaps - if it would help - you could kindly give us a summary of the evidence for the manipulation over the years?
( I have tried to find answers by going through a number of your earlier video blogs but I think I may have missed crucial evidence and argument)

Best wishes,
Silver Penguin

England